2107154440 has 32 divisors (see below), whose sum is σ = 4869238680. Its totient is φ = 820081152.

The previous prime is 2107154411. The next prime is 2107154447. The reversal of 2107154440 is 444517012.

It can be written as a sum of positive squares in 4 ways, for example, as 1484252676 + 622901764 = 38526^2 + 24958^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2107154399 and 2107154408.

It is not an unprimeable number, because it can be changed into a prime (2107154447) 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, 710397 + ... + 713356.

Almost surely, 2^2107154440 is an apocalyptic number.

2107154440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2107154440 is an abundant number, since it is smaller than the sum of its proper divisors (2762084240).

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

2107154440 is a wasteful number, since it uses less digits than its factorization.

2107154440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423801 (or 1423797 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2107154440 is about 45903.7519163739. The cubic root of 2107154440 is about 1282.0317748360.

The spelling of 2107154440 in words is "two billion, one hundred seven million, one hundred fifty-four thousand, four hundred forty".