1566121150 has 96 divisors (see below), whose sum is σ = 3249675936. Its totient is φ = 561440000.

The previous prime is 1566121093. The next prime is 1566121199. The reversal of 1566121150 is 511216651.

It is a happy number.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6721434 + ... + 6721666.

It is an arithmetic number, because the mean of its divisors is an integer number (33850791).

Almost surely, 2^1566121150 is an apocalyptic number.

1566121150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1566121150 is an abundant number, since it is smaller than the sum of its proper divisors (1683554786).

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

1566121150 is a wasteful number, since it uses less digits than its factorization.

1566121150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1566121150 is about 39574.2485715143. The cubic root of 1566121150 is about 1161.2929375659.

The spelling of 1566121150 in words is "one billion, five hundred sixty-six million, one hundred twenty-one thousand, one hundred fifty".