1461557913 has 8 divisors (see below), whose sum is σ = 1949071776. Its totient is φ = 974208000.

The previous prime is 1461557897. The next prime is 1461557941. The reversal of 1461557913 is 3197551641.

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

It is not a de Polignac number, because 1461557913 - 2⁴ = 1461557897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1461557953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18408 + ... + 57113.

It is an arithmetic number, because the mean of its divisors is an integer number (243633972).

Almost surely, 2^1461557913 is an apocalyptic number.

It is an amenable number.

1461557913 is a deficient number, since it is larger than the sum of its proper divisors (487513863).

1461557913 is an equidigital number, since it uses as much as digits as its factorization.

1461557913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81975.

The product of its digits is 113400, while the sum is 42.

The square root of 1461557913 is about 38230.3271369733. The cubic root of 1461557913 is about 1134.8505597396.

The spelling of 1461557913 in words is "one billion, four hundred sixty-one million, five hundred fifty-seven thousand, nine hundred thirteen".