37274981 has 4 divisors (see below), whose sum is σ = 37831392. Its totient is φ = 36718572.

The previous prime is 37274977. The next prime is 37274983. The reversal of 37274981 is 18947273.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18947273 = 71 ⋅266863.

It is a cyclic number.

It is not a de Polignac number, because 37274981 - 2² = 37274977 is a prime.

It is a super-2 number, since 2×37274981² = 2778848417100722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37274983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278105 + ... + 278238.

It is an arithmetic number, because the mean of its divisors is an integer number (9457848).

Almost surely, 2^37274981 is an apocalyptic number.

It is an amenable number.

37274981 is a deficient number, since it is larger than the sum of its proper divisors (556411).

37274981 is an equidigital number, since it uses as much as digits as its factorization.

37274981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556410.

The product of its digits is 84672, while the sum is 41.

The square root of 37274981 is about 6105.3239881271. The cubic root of 37274981 is about 334.0456419871.

The spelling of 37274981 in words is "thirty-seven million, two hundred seventy-four thousand, nine hundred eighty-one".