1992425949 has 12 divisors (see below), whose sum is σ = 2894586396. Its totient is φ = 1320604992.

The previous prime is 1992425849. The next prime is 1992425951. The reversal of 1992425949 is 9495242991.

1992425949 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 42 + 594 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 963171225 + 1029254724 = 31035^2 + 32082^2 .

It is not a de Polignac number, because 1992425949 - 2²⁰ = 1991377373 is a prime.

It is a super-2 number, since 2×1992425949² = 7939522324497101202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1992425895 and 1992425904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992425969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 638272 + ... + 641385.

It is an arithmetic number, because the mean of its divisors is an integer number (241215533).

Almost surely, 2^1992425949 is an apocalyptic number.

It is an amenable number.

1992425949 is a deficient number, since it is larger than the sum of its proper divisors (902160447).

1992425949 is a wasteful number, since it uses less digits than its factorization.

1992425949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279836 (or 1279833 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 1992425949 is about 44636.5987615544. The cubic root of 1992425949 is about 1258.3285869193.

The spelling of 1992425949 in words is "one billion, nine hundred ninety-two million, four hundred twenty-five thousand, nine hundred forty-nine".