381642695 has 8 divisors (see below), whose sum is σ = 523395744. Its totient is φ = 261697824.

The previous prime is 381642691. The next prime is 381642733. The reversal of 381642695 is 596246183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381642695 - 2² = 381642691 is a prime.

It is a super-2 number, since 2×381642695² = 291302293293726050, 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 (381642691) 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, 5452004 + ... + 5452073.

It is an arithmetic number, because the mean of its divisors is an integer number (65424468).

Almost surely, 2^381642695 is an apocalyptic number.

381642695 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381642695 is a deficient number, since it is larger than the sum of its proper divisors (141753049).

381642695 is a wasteful number, since it uses less digits than its factorization.

381642695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904089.

The product of its digits is 311040, while the sum is 44.

The square root of 381642695 is about 19535.6774901717. The cubic root of 381642695 is about 725.3578542525.

The spelling of 381642695 in words is "three hundred eighty-one million, six hundred forty-two thousand, six hundred ninety-five".