2157670477 has 8 divisors (see below), whose sum is σ = 2193396480. Its totient is φ = 2122236480.

The previous prime is 2157670453. The next prime is 2157670483. The reversal of 2157670477 is 7740767512.

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 2157670477 - 2¹⁵ = 2157637709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157677477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58077 + ... + 87682.

It is an arithmetic number, because the mean of its divisors is an integer number (274174560).

Almost surely, 2^2157670477 is an apocalyptic number.

It is an amenable number.

2157670477 is a deficient number, since it is larger than the sum of its proper divisors (35726003).

2157670477 is a wasteful number, since it uses less digits than its factorization.

2157670477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146003.

The product of its (nonzero) digits is 576240, while the sum is 46.

The square root of 2157670477 is about 46450.7317165187. The cubic root of 2157670477 is about 1292.1959426788.

The spelling of 2157670477 in words is "two billion, one hundred fifty-seven million, six hundred seventy thousand, four hundred seventy-seven".