2105391960 has 128 divisors (see below), whose sum is σ = 8020569600. Its totient is φ = 481230720.

The previous prime is 2105391947. The next prime is 2105391973. The reversal of 2105391960 is 691935012.

It is an interprime number because it is at equal distance from previous prime (2105391947) and next prime (2105391973).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131686 + ... + 146805.

It is an arithmetic number, because the mean of its divisors is an integer number (62660700).

Almost surely, 2^2105391960 is an apocalyptic number.

2105391960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105391960 is an abundant number, since it is smaller than the sum of its proper divisors (5915177640).

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

2105391960 is a wasteful number, since it uses less digits than its factorization.

2105391960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278518 (or 278508 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 2105391960 is about 45884.5503410462. The cubic root of 2105391960 is about 1281.6742333104.

The spelling of 2105391960 in words is "two billion, one hundred five million, three hundred ninety-one thousand, nine hundred sixty".