372827981 has 2 divisors, whose sum is σ = 372827982. Its totient is φ = 372827980.

The previous prime is 372827971. The next prime is 372827993. The reversal of 372827981 is 189728273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276689956 + 96138025 = 16634^2 + 9805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-372827981 is a prime.

It is a super-2 number, since 2×372827981² = 278001406833072722, which contains 22 as substring.

It is equal to p_19961489 and since 372827981 and 19961489 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372827921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186413990 + 186413991.

It is an arithmetic number, because the mean of its divisors is an integer number (186413991).

Almost surely, 2^372827981 is an apocalyptic number.

It is an amenable number.

372827981 is a deficient number, since it is larger than the sum of its proper divisors (1).

372827981 is an equidigital number, since it uses as much as digits as its factorization.

372827981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 372827981 is about 19308.7539991580. The cubic root of 372827981 is about 719.7298246857.

The spelling of 372827981 in words is "three hundred seventy-two million, eight hundred twenty-seven thousand, nine hundred eighty-one".