1561477362 has 16 divisors (see below), whose sum is σ = 3175886880. Its totient is φ = 511670432.

The previous prime is 1561477349. The next prime is 1561477403. The reversal of 1561477362 is 2637741651.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2205123 + ... + 2205830.

It is an arithmetic number, because the mean of its divisors is an integer number (198492930).

Almost surely, 2^1561477362 is an apocalyptic number.

1561477362 is an abundant number, since it is smaller than the sum of its proper divisors (1614409518).

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

1561477362 is a wasteful number, since it uses less digits than its factorization.

1561477362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411017.

The product of its digits is 211680, while the sum is 42.

The square root of 1561477362 is about 39515.5331736774. The cubic root of 1561477362 is about 1160.1439976809.

The spelling of 1561477362 in words is "one billion, five hundred sixty-one million, four hundred seventy-seven thousand, three hundred sixty-two".