2177154138 has 16 divisors (see below), whose sum is σ = 4379479776. Its totient is φ = 721522800.

The previous prime is 2177154137. The next prime is 2177154139. The reversal of 2177154138 is 8314517712.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2177154137) and next prime (2177154139).

It is a super-2 number, since 2×2177154138² = 9480000281221046088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2177154096 and 2177154105.

It is not an unprimeable number, because it can be changed into a prime (2177154131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047688 + ... + 1049763.

It is an arithmetic number, because the mean of its divisors is an integer number (273717486).

Almost surely, 2^2177154138 is an apocalyptic number.

2177154138 is an abundant number, since it is smaller than the sum of its proper divisors (2202325638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2177154138 is a wasteful number, since it uses less digits than its factorization.

2177154138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097629.

The product of its digits is 47040, while the sum is 39.

The square root of 2177154138 is about 46659.9843334736. The cubic root of 2177154138 is about 1296.0737829031.

The spelling of 2177154138 in words is "two billion, one hundred seventy-seven million, one hundred fifty-four thousand, one hundred thirty-eight".