1972667859 has 16 divisors (see below), whose sum is σ = 2642585088. Its totient is φ = 1308945312.

The previous prime is 1972667849. The next prime is 1972667863. The reversal of 1972667859 is 9587662791.

It is not a de Polignac number, because 1972667859 - 2⁷ = 1972667731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972667849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861414 + ... + 863700.

It is an arithmetic number, because the mean of its divisors is an integer number (165161568).

Almost surely, 2^1972667859 is an apocalyptic number.

1972667859 is a deficient number, since it is larger than the sum of its proper divisors (669917229).

1972667859 is a wasteful number, since it uses less digits than its factorization.

1972667859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514.

The product of its digits is 11430720, while the sum is 60.

The square root of 1972667859 is about 44414.7256999297. The cubic root of 1972667859 is about 1254.1553146353.

The spelling of 1972667859 in words is "one billion, nine hundred seventy-two million, six hundred sixty-seven thousand, eight hundred fifty-nine".