381549036 has 24 divisors (see below), whose sum is σ = 971216064. Its totient is φ = 115620880.

The previous prime is 381549029. The next prime is 381549043. The reversal of 381549036 is 630945183.

It is an interprime number because it is at equal distance from previous prime (381549029) and next prime (381549043).

It is a junction number, because it is equal to n+sod(n) for n = 381548985 and 381549003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445130 + ... + 1445393.

It is an arithmetic number, because the mean of its divisors is an integer number (40467336).

Almost surely, 2^381549036 is an apocalyptic number.

It is an amenable number.

381549036 is an abundant number, since it is smaller than the sum of its proper divisors (589667028).

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

381549036 is a wasteful number, since it uses less digits than its factorization.

381549036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890541 (or 2890539 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 381549036 is about 19533.2802160825. The cubic root of 381549036 is about 725.2985126656.

The spelling of 381549036 in words is "three hundred eighty-one million, five hundred forty-nine thousand, thirty-six".