1561179160 has 32 divisors (see below), whose sum is σ = 3525735600. Its totient is φ = 622145920.

The previous prime is 1561179157. The next prime is 1561179167. The reversal of 1561179160 is 619711651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561179167) 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, 61786 + ... + 83305.

Almost surely, 2^1561179160 is an apocalyptic number.

1561179160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561179160 is an abundant number, since it is smaller than the sum of its proper divisors (1964556440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561179160 is a wasteful number, since it uses less digits than its factorization.

1561179160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145371 (or 145367 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 1561179160 is about 39511.7597684537. The cubic root of 1561179160 is about 1160.0701404279.

The spelling of 1561179160 in words is "one billion, five hundred sixty-one million, one hundred seventy-nine thousand, one hundred sixty".