381023994 has 16 divisors (see below), whose sum is σ = 820667232. Its totient is φ = 117238128.

The previous prime is 381023983. The next prime is 381024001. The reversal of 381023994 is 499320183.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 2442384 + ... + 2442539.

It is an arithmetic number, because the mean of its divisors is an integer number (51291702).

Almost surely, 2^381023994 is an apocalyptic number.

381023994 is an abundant number, since it is smaller than the sum of its proper divisors (439643238).

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

381023994 is a wasteful number, since it uses less digits than its factorization.

381023994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884941.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 381023994 is about 19519.8359111956. The cubic root of 381023994 is about 724.9656703523.

The spelling of 381023994 in words is "three hundred eighty-one million, twenty-three thousand, nine hundred ninety-four".