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BaseRepresentation
bin111000101111110…
…1011011111011101
311220200221211022211
41301133223133131
512344424130023
6512540040421
765120560312
oct16137533735
94820854284
101904130013
11897917075
12451833111
1324464b666
14140c60d09
15b2276a0d
hex717eb7dd

1904130013 has 2 divisors, whose sum is σ = 1904130014. Its totient is φ = 1904130012.

The previous prime is 1904129989. The next prime is 1904130023. The reversal of 1904130013 is 3100314091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275775524 + 628354489 = 35718^2 + 25067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1904130013 is a prime.

It is a super-2 number, since 2×19041300132 = 7251422212814760338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1904130023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952065006 + 952065007.

It is an arithmetic number, because the mean of its divisors is an integer number (952065007).

Almost surely, 21904130013 is an apocalyptic number.

It is an amenable number.

1904130013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904130013 is an equidigital number, since it uses as much as digits as its factorization.

1904130013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1904130013 is about 43636.3382171327. The cubic root of 1904130013 is about 1239.4590974630.

The spelling of 1904130013 in words is "one billion, nine hundred four million, one hundred thirty thousand, thirteen".