1992425957 has 2 divisors, whose sum is σ = 1992425958. Its totient is φ = 1992425956.

The previous prime is 1992425951. The next prime is 1992425969. The reversal of 1992425957 is 7595242991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1505517601 + 486908356 = 38801^2 + 22066^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992425957 - 2²⁸ = 1723990501 is a prime.

It is a super-2 number, since 2×1992425957² = 7939522388254731698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1992425899 and 1992425908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992425951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996212978 + 996212979.

It is an arithmetic number, because the mean of its divisors is an integer number (996212979).

Almost surely, 2^1992425957 is an apocalyptic number.

It is an amenable number.

1992425957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992425957 is an equidigital number, since it uses as much as digits as its factorization.

1992425957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 53.

The square root of 1992425957 is about 44636.5988511670. The cubic root of 1992425957 is about 1258.3285886035.

The spelling of 1992425957 in words is "one billion, nine hundred ninety-two million, four hundred twenty-five thousand, nine hundred fifty-seven".