2157470654 has 4 divisors (see below), whose sum is σ = 3236205984. Its totient is φ = 1078735326.

The previous prime is 2157470603. The next prime is 2157470669. The reversal of 2157470654 is 4560747512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539367662 + ... + 539367665.

It is an arithmetic number, because the mean of its divisors is an integer number (809051496).

Almost surely, 2^2157470654 is an apocalyptic number.

2157470654 is a deficient number, since it is larger than the sum of its proper divisors (1078735330).

2157470654 is a wasteful number, since it uses less digits than its factorization.

2157470654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078735329.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2157470654 is about 46448.5807533449. The cubic root of 2157470654 is about 1292.1560511315.

The spelling of 2157470654 in words is "two billion, one hundred fifty-seven million, four hundred seventy thousand, six hundred fifty-four".