378461556 has 36 divisors (see below), whose sum is σ = 1043637504. Its totient is φ = 114685200.

The previous prime is 378461539. The next prime is 378461557. The reversal of 378461556 is 655164873.

378461556 is a `hidden beast` number, since 37 + 8 + 4 + 61 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×378461556² = 286466298739882272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378461557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477460 + ... + 478251.

Almost surely, 2^378461556 is an apocalyptic number.

378461556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

378461556 is an abundant number, since it is smaller than the sum of its proper divisors (665175948).

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

378461556 is a wasteful number, since it uses less digits than its factorization.

378461556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955732 (or 955727 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 378461556 is about 19454.0884134929. The cubic root of 378461556 is about 723.3368494004.

The spelling of 378461556 in words is "three hundred seventy-eight million, four hundred sixty-one thousand, five hundred fifty-six".