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1901313457 = 29214915173
BaseRepresentation
bin111000101010011…
…1011110110110001
311220111122201201221
41301110323312301
512343214012312
6512355425041
765054616631
oct16124736661
94814581657
101901313457
11896272a3a
124508b5181
13243ba3664
1414072a6c1
15b1dbc207
hex7153bdb1

1901313457 has 12 divisors (see below), whose sum is σ = 1982483100. Its totient is φ = 1823310272.

The previous prime is 1901313443. The next prime is 1901313481. The reversal of 1901313457 is 7543131091.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6974881 + 1894338576 = 2641^2 + 43524^2 .

It is not a de Polignac number, because 1901313457 - 219 = 1900789169 is a prime.

It is a super-2 number, since 2×19013134572 = 7229985723538581698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901313257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117723 + ... + 132895.

It is an arithmetic number, because the mean of its divisors is an integer number (165206925).

Almost surely, 21901313457 is an apocalyptic number.

It is an amenable number.

1901313457 is a deficient number, since it is larger than the sum of its proper divisors (81169643).

1901313457 is a wasteful number, since it uses less digits than its factorization.

1901313457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15380 (or 15351 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1901313457 is about 43604.0532175622. The cubic root of 1901313457 is about 1238.8476671110.

The spelling of 1901313457 in words is "one billion, nine hundred one million, three hundred thirteen thousand, four hundred fifty-seven".

Divisors: 1 29 149 841 4321 15173 125309 440017 2260777 12760493 65562533 1901313457