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1405513141 = 23157389231
BaseRepresentation
bin101001111000110…
…0110110110110101
310121221201110120021
41103301212312311
510334302410031
6351245005141
746554443644
oct12361466665
93557643507
101405513141
1166141490a
123328537b1
1319525bca6
14d494935b
15835d3511
hex53c66db5

1405513141 has 8 divisors (see below), whose sum is σ = 1475967744. Its totient is φ = 1335837360.

The previous prime is 1405513133. The next prime is 1405513147. The reversal of 1405513141 is 1413155041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1405513141 - 23 = 1405513133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405513147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191005 + ... + 198226.

It is an arithmetic number, because the mean of its divisors is an integer number (184495968).

Almost surely, 21405513141 is an apocalyptic number.

It is an amenable number.

1405513141 is a deficient number, since it is larger than the sum of its proper divisors (70454603).

1405513141 is a wasteful number, since it uses less digits than its factorization.

1405513141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389411.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1405513141 is about 37490.1739259769. The cubic root of 1405513141 is about 1120.1554686924.

Adding to 1405513141 its reverse (1413155041), we get a palindrome (2818668182).

The spelling of 1405513141 in words is "one billion, four hundred five million, five hundred thirteen thousand, one hundred forty-one".

Divisors: 1 23 157 3611 389231 8952313 61109267 1405513141