2187479671 has 16 divisors (see below), whose sum is σ = 2482207840. Its totient is φ = 1911029760.

The previous prime is 2187479659. The next prime is 2187479681. The reversal of 2187479671 is 1769747812.

It is a 19-Lehmer number, since φ(2187479671) divides (2187479671-1)¹⁹.

It is a cyclic number.

It is not a de Polignac number, because 2187479671 - 2²¹ = 2185382519 is a prime.

It is a super-2 number, since 2×2187479671² = 9570134622076536482, which contains 22 as substring.

It is the 46771-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187479611) by changing a digit.

It is a nontrivial repunit in base 46770.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280951 + ... + 288631.

It is an arithmetic number, because the mean of its divisors is an integer number (155137990).

Almost surely, 2^2187479671 is an apocalyptic number.

2187479671 is a deficient number, since it is larger than the sum of its proper divisors (294728169).

2187479671 is a wasteful number, since it uses less digits than its factorization.

2187479671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866.

The product of its digits is 1185408, while the sum is 52.

The square root of 2187479671 is about 46770.5000080179. The cubic root of 2187479671 is about 1298.1195041851.

The spelling of 2187479671 in words is "two billion, one hundred eighty-seven million, four hundred seventy-nine thousand, six hundred seventy-one".