1940607972 has 18 divisors (see below), whose sum is σ = 4905425798. Its totient is φ = 646869312.

The previous prime is 1940607943. The next prime is 1940607973. The reversal of 1940607972 is 2797060491.

It can be written as a sum of positive squares in only one way, i.e., 1824485796 + 116122176 = 42714^2 + 10776^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1940607973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26952853 + ... + 26952924.

Almost surely, 2^1940607972 is an apocalyptic number.

1940607972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1940607972 is an abundant number, since it is smaller than the sum of its proper divisors (2964817826).

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

1940607972 is a wasteful number, since it uses less digits than its factorization.

1940607972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53905787 (or 53905782 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 1940607972 is about 44052.3321970585. The cubic root of 1940607972 is about 1247.3239758975.

The spelling of 1940607972 in words is "one billion, nine hundred forty million, six hundred seven thousand, nine hundred seventy-two".