380442646890 has 48 divisors (see below), whose sum is σ = 989399044296. Its totient is φ = 101425920000.

The previous prime is 380442646861. The next prime is 380442646891. The reversal of 380442646890 is 98646244083.

380442646890 is a `hidden beast` number, since 3 + 80 + 442 + 6 + 46 + 89 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 245212145721 + 135230501169 = 495189^2 + 367737^2 .

It is not an unprimeable number, because it can be changed into a prime (380442646891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168171 + ... + 888350.

Almost surely, 2^380442646890 is an apocalyptic number.

380442646890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

380442646890 is an abundant number, since it is smaller than the sum of its proper divisors (608956397406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

380442646890 is a wasteful number, since it uses less digits than its factorization.

380442646890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060535 (or 1060532 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 380442646890 in words is "three hundred eighty billion, four hundred forty-two million, six hundred forty-six thousand, eight hundred ninety".