1540917137 has 4 divisors (see below), whose sum is σ = 1573702656. Its totient is φ = 1508131620.

The previous prime is 1540917113. The next prime is 1540917143. The reversal of 1540917137 is 7317190451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1540917137 - 2⁶ = 1540917073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540917137.

It is not an unprimeable number, because it can be changed into a prime (1540919137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16392689 + ... + 16392782.

It is an arithmetic number, because the mean of its divisors is an integer number (393425664).

Almost surely, 2^1540917137 is an apocalyptic number.

It is an amenable number.

1540917137 is a deficient number, since it is larger than the sum of its proper divisors (32785519).

1540917137 is an equidigital number, since it uses as much as digits as its factorization.

1540917137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32785518.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 1540917137 is about 39254.5174088282. The cubic root of 1540917137 is about 1155.0295494149.

The spelling of 1540917137 in words is "one billion, five hundred forty million, nine hundred seventeen thousand, one hundred thirty-seven".