381000007 has 4 divisors (see below), whose sum is σ = 383908536. Its totient is φ = 378091480.

The previous prime is 380999959. The next prime is 381000019. The reversal of 381000007 is 700000183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381000007 - 2²³ = 372611399 is a prime.

It is a super-2 number, since 2×381000007² = 290322010668000098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381000047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454068 + ... + 1454329.

It is an arithmetic number, because the mean of its divisors is an integer number (95977134).

Almost surely, 2^381000007 is an apocalyptic number.

381000007 is a deficient number, since it is larger than the sum of its proper divisors (2908529).

381000007 is a wasteful number, since it uses less digits than its factorization.

381000007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908528.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 381000007 is about 19519.2214752536. The cubic root of 381000007 is about 724.9504568603.

The spelling of 381000007 in words is "three hundred eighty-one million, seven", and thus it is an aban number.