464353638 has 16 divisors (see below), whose sum is σ = 1061379840. Its totient is φ = 132672456.

The previous prime is 464353627. The next prime is 464353639. The reversal of 464353638 is 836353464.

It is a super-2 number, since 2×464353638² = 431248602247670088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 11056039 = 464353638 / (4 + 6 + 4 + 3 + 5 + 3 + 6 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 464353638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464353639) 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, 5527978 + ... + 5528061.

It is an arithmetic number, because the mean of its divisors is an integer number (66336240).

Almost surely, 2^464353638 is an apocalyptic number.

464353638 is an abundant number, since it is smaller than the sum of its proper divisors (597026202).

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

464353638 is a wasteful number, since it uses less digits than its factorization.

464353638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056051.

The product of its digits is 622080, while the sum is 42.

The square root of 464353638 is about 21548.8662810831. The cubic root of 464353638 is about 774.3719576448.

The spelling of 464353638 in words is "four hundred sixty-four million, three hundred fifty-three thousand, six hundred thirty-eight".