1230201992 has 8 divisors (see below), whose sum is σ = 2306628750. Its totient is φ = 615100992.

The previous prime is 1230201919. The next prime is 1230202003. The reversal of 1230201992 is 2991020321.

It can be written as a sum of positive squares in only one way, i.e., 1205061796 + 25140196 = 34714^2 + 5014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1230201992² = 3026793882241536128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76887617 + ... + 76887632.

Almost surely, 2^1230201992 is an apocalyptic number.

It is an amenable number.

1230201992 is a deficient number, since it is larger than the sum of its proper divisors (1076426758).

1230201992 is a wasteful number, since it uses less digits than its factorization.

1230201992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153775255 (or 153775251 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1230201992 is about 35074.2354442688. The cubic root of 1230201992 is about 1071.4999175821.

The spelling of 1230201992 in words is "one billion, two hundred thirty million, two hundred one thousand, nine hundred ninety-two".