381009132 has 36 divisors (see below), whose sum is σ = 1100693776. Its totient is φ = 108859680.

The previous prime is 381009107. The next prime is 381009157. The reversal of 381009132 is 231900183.

It is an interprime number because it is at equal distance from previous prime (381009107) and next prime (381009157).

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

It is a junction number, because it is equal to n+sod(n) for n = 381009096 and 381009105.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755719 + ... + 756222.

Almost surely, 2^381009132 is an apocalyptic number.

It is an amenable number.

381009132 is an abundant number, since it is smaller than the sum of its proper divisors (719684644).

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

381009132 is a wasteful number, since it uses less digits than its factorization.

381009132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511958 (or 1511953 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 381009132 is about 19519.4552178077. The cubic root of 381009132 is about 724.9562443668.

The spelling of 381009132 in words is "three hundred eighty-one million, nine thousand, one hundred thirty-two".