381364940 has 48 divisors (see below), whose sum is σ = 875508480. Its totient is φ = 138386880.

The previous prime is 381364939. The next prime is 381364981. The reversal of 381364940 is 49463183.

381364940 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×381364940² = 290878434922407200, which contains 22 as substring.

381364940 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 381364894 and 381364903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122321 + ... + 125399.

It is an arithmetic number, because the mean of its divisors is an integer number (18239760).

Almost surely, 2^381364940 is an apocalyptic number.

It is an amenable number.

381364940 is an abundant number, since it is smaller than the sum of its proper divisors (494143540).

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

381364940 is a wasteful number, since it uses less digits than its factorization.

381364940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 3660 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 381364940 is about 19528.5672797571. The cubic root of 381364940 is about 725.1818426152.

The spelling of 381364940 in words is "three hundred eighty-one million, three hundred sixty-four thousand, nine hundred forty".