380402045 has 4 divisors (see below), whose sum is σ = 456482460. Its totient is φ = 304321632.

The previous prime is 380402027. The next prime is 380402053. The reversal of 380402045 is 540204083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221087161 + 159314884 = 14869^2 + 12622^2 .

It is a cyclic number.

It is not a de Polignac number, because 380402045 - 2⁶ = 380401981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38040200 + ... + 38040209.

It is an arithmetic number, because the mean of its divisors is an integer number (114120615).

Almost surely, 2^380402045 is an apocalyptic number.

It is an amenable number.

380402045 is a deficient number, since it is larger than the sum of its proper divisors (76080415).

380402045 is an equidigital number, since it uses as much as digits as its factorization.

380402045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76080414.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 380402045 is about 19503.8982001035. The cubic root of 380402045 is about 724.5709994697.

The spelling of 380402045 in words is "three hundred eighty million, four hundred two thousand, forty-five".