2157634514 has 8 divisors (see below), whose sum is σ = 3698802048. Its totient is φ = 924700500.

The previous prime is 2157634483. The next prime is 2157634517. The reversal of 2157634514 is 4154367512.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2157634517) 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, 77058362 + ... + 77058389.

It is an arithmetic number, because the mean of its divisors is an integer number (462350256).

Almost surely, 2^2157634514 is an apocalyptic number.

2157634514 is a deficient number, since it is larger than the sum of its proper divisors (1541167534).

2157634514 is a wasteful number, since it uses less digits than its factorization.

2157634514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154116760.

The product of its digits is 100800, while the sum is 38.

The square root of 2157634514 is about 46450.3446058261. The cubic root of 2157634514 is about 1292.1887634081.

The spelling of 2157634514 in words is "two billion, one hundred fifty-seven million, six hundred thirty-four thousand, five hundred fourteen".