1561829152 has 24 divisors (see below), whose sum is σ = 3311379036. Its totient is φ = 720844032.

The previous prime is 1561829149. The next prime is 1561829153. The reversal of 1561829152 is 2519281651.

It can be written as a sum of positive squares in 2 ways, for example, as 1414060816 + 147768336 = 37604^2 + 12156^2 .

It is not an unprimeable number, because it can be changed into a prime (1561829153) 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, 1876783 + ... + 1877614.

Almost surely, 2^1561829152 is an apocalyptic number.

It is an amenable number.

1561829152 is an abundant number, since it is smaller than the sum of its proper divisors (1749549884).

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

1561829152 is a wasteful number, since it uses less digits than its factorization.

1561829152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754420 (or 3754412 counting only the distinct ones).

The product of its digits is 43200, while the sum is 40.

The square root of 1561829152 is about 39519.9842105232. The cubic root of 1561829152 is about 1160.2311152661.

The spelling of 1561829152 in words is "one billion, five hundred sixty-one million, eight hundred twenty-nine thousand, one hundred fifty-two".