2147657438 has 8 divisors (see below), whose sum is σ = 3391038120. Its totient is φ = 1017311400.

The previous prime is 2147657431. The next prime is 2147657441. The reversal of 2147657438 is 8347567412.

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

It is a super-2 number, since 2×2147657438² = 9224864941993447688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2147657392 and 2147657401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147657431) 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, 28258613 + ... + 28258688.

It is an arithmetic number, because the mean of its divisors is an integer number (423879765).

Almost surely, 2^2147657438 is an apocalyptic number.

2147657438 is a deficient number, since it is larger than the sum of its proper divisors (1243380682).

2147657438 is a wasteful number, since it uses less digits than its factorization.

2147657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56517322.

The product of its digits is 1128960, while the sum is 47.

The square root of 2147657438 is about 46342.8250973114. The cubic root of 2147657438 is about 1290.1939571752.

The spelling of 2147657438 in words is "two billion, one hundred forty-seven million, six hundred fifty-seven thousand, four hundred thirty-eight".