1011661562 has 16 divisors (see below), whose sum is σ = 1550223360. Its totient is φ = 494971152.

The previous prime is 1011661537. The next prime is 1011661579. The reversal of 1011661562 is 2651661101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28139 + ... + 53057.

It is an arithmetic number, because the mean of its divisors is an integer number (96888960).

Almost surely, 2^1011661562 is an apocalyptic number.

1011661562 is a deficient number, since it is larger than the sum of its proper divisors (538561798).

1011661562 is a wasteful number, since it uses less digits than its factorization.

1011661562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25357.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1011661562 is about 31806.6276426785. The cubic root of 1011661562 is about 1003.8721742472.

The spelling of 1011661562 in words is "one billion, eleven million, six hundred sixty-one thousand, five hundred sixty-two".