38451971 has 2 divisors, whose sum is σ = 38451972. Its totient is φ = 38451970.

The previous prime is 38451961. The next prime is 38451989. The reversal of 38451971 is 17915483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38451971 - 2¹⁴ = 38435587 is a prime.

It is not a weakly prime, because it can be changed into another prime (38451901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19225985 + 19225986.

It is an arithmetic number, because the mean of its divisors is an integer number (19225986).

Almost surely, 2^38451971 is an apocalyptic number.

38451971 is a deficient number, since it is larger than the sum of its proper divisors (1).

38451971 is an equidigital number, since it uses as much as digits as its factorization.

38451971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 38451971 is about 6200.9653280759. The cubic root of 38451971 is about 337.5251990330.

The spelling of 38451971 in words is "thirty-eight million, four hundred fifty-one thousand, nine hundred seventy-one".