380037991 has 4 divisors (see below), whose sum is σ = 386268184. Its totient is φ = 373807800.

The previous prime is 380037971. The next prime is 380037997. The reversal of 380037991 is 199730083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199730083 = 7 ⋅28532869.

It is a cyclic number.

It is not a de Polignac number, because 380037991 - 2¹⁹ = 379513703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380037997) 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, 3115005 + ... + 3115126.

It is an arithmetic number, because the mean of its divisors is an integer number (96567046).

Almost surely, 2^380037991 is an apocalyptic number.

380037991 is a deficient number, since it is larger than the sum of its proper divisors (6230193).

380037991 is an equidigital number, since it uses as much as digits as its factorization.

380037991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230192.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 380037991 is about 19494.5631138531. The cubic root of 380037991 is about 724.3397816763.

The spelling of 380037991 in words is "three hundred eighty million, thirty-seven thousand, nine hundred ninety-one".