1926257972 has 12 divisors (see below), whose sum is σ = 3408827940. Its totient is φ = 952307136.

The previous prime is 1926257953. The next prime is 1926257989. The reversal of 1926257972 is 2797526291.

It can be written as a sum of positive squares in 2 ways, for example, as 902641936 + 1023616036 = 30044^2 + 31994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1926257972.

It is a congruent number.

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, 2705063 + ... + 2705774.

It is an arithmetic number, because the mean of its divisors is an integer number (284068995).

Almost surely, 2^1926257972 is an apocalyptic number.

It is an amenable number.

1926257972 is a deficient number, since it is larger than the sum of its proper divisors (1482569968).

1926257972 is a wasteful number, since it uses less digits than its factorization.

1926257972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410930 (or 5410928 counting only the distinct ones).

The product of its digits is 952560, while the sum is 50.

The square root of 1926257972 is about 43889.1555170523. The cubic root of 1926257972 is about 1244.2418833629.

The spelling of 1926257972 in words is "one billion, nine hundred twenty-six million, two hundred fifty-seven thousand, nine hundred seventy-two".