2158057951 has 6 divisors (see below), whose sum is σ = 2510394000. Its totient is φ = 1849763916.

The previous prime is 2158057859. The next prime is 2158057987. The reversal of 2158057951 is 1597508512.

It is not a de Polignac number, because 2158057951 - 2¹³ = 2158049759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2158057898 and 2158057907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158057991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22020951 + ... + 22021048.

It is an arithmetic number, because the mean of its divisors is an integer number (418399000).

Almost surely, 2^2158057951 is an apocalyptic number.

2158057951 is a deficient number, since it is larger than the sum of its proper divisors (352336049).

2158057951 is an equidigital number, since it uses as much as digits as its factorization.

2158057951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44042013 (or 44042006 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 43.

The square root of 2158057951 is about 46454.9023354909. The cubic root of 2158057951 is about 1292.2732888055.

The spelling of 2158057951 in words is "two billion, one hundred fifty-eight million, fifty-seven thousand, nine hundred fifty-one".