1667072972 has 12 divisors (see below), whose sum is σ = 3088988280. Its totient is φ = 784504896.

The previous prime is 1667072969. The next prime is 1667072983. The reversal of 1667072972 is 2792707661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12257822 + ... + 12257957.

It is an arithmetic number, because the mean of its divisors is an integer number (257415690).

Almost surely, 2^1667072972 is an apocalyptic number.

It is an amenable number.

1667072972 is a deficient number, since it is larger than the sum of its proper divisors (1421915308).

1667072972 is a wasteful number, since it uses less digits than its factorization.

1667072972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24515800 (or 24515798 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 1667072972 is about 40829.8049468767. The cubic root of 1667072972 is about 1185.7274393166.

The spelling of 1667072972 in words is "one billion, six hundred sixty-seven million, seventy-two thousand, nine hundred seventy-two".