380134721 has 2 divisors, whose sum is σ = 380134722. Its totient is φ = 380134720.

The previous prime is 380134693. The next prime is 380134759. The reversal of 380134721 is 127431083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379821121 + 313600 = 19489^2 + 560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380134721 is a prime.

It is a super-2 number, since 2×380134721² = 289004812219495682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380134021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190067360 + 190067361.

It is an arithmetic number, because the mean of its divisors is an integer number (190067361).

Almost surely, 2^380134721 is an apocalyptic number.

It is an amenable number.

380134721 is a deficient number, since it is larger than the sum of its proper divisors (1).

380134721 is an equidigital number, since it uses as much as digits as its factorization.

380134721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 380134721 is about 19497.0439041410. The cubic root of 380134721 is about 724.4012311850.

The spelling of 380134721 in words is "three hundred eighty million, one hundred thirty-four thousand, seven hundred twenty-one".