380651616 has 48 divisors (see below), whose sum is σ = 1110236400. Its totient is φ = 126883584.

The previous prime is 380651611. The next prime is 380651627. The reversal of 380651616 is 616156083.

It is a happy number.

380651616 is a `hidden beast` number, since 38 + 0 + 6 + 5 + 1 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×380651616² = 289791305526822912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380651611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219421 + ... + 221148.

It is an arithmetic number, because the mean of its divisors is an integer number (23129925).

Almost surely, 2^380651616 is an apocalyptic number.

380651616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

380651616 is an abundant number, since it is smaller than the sum of its proper divisors (729584784).

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

380651616 is a wasteful number, since it uses less digits than its factorization.

380651616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440588 (or 440574 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 380651616 is about 19510.2951284700. The cubic root of 380651616 is about 724.7294216614.

The spelling of 380651616 in words is "three hundred eighty million, six hundred fifty-one thousand, six hundred sixteen".