2145072957 has 8 divisors (see below), whose sum is σ = 2958721440. Its totient is φ = 1380736560.

The previous prime is 2145072913. The next prime is 2145072967. The reversal of 2145072957 is 7592705412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2145072957 - 2¹⁵ = 2145040189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145072967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12327919 + ... + 12328092.

It is an arithmetic number, because the mean of its divisors is an integer number (369840180).

Almost surely, 2^2145072957 is an apocalyptic number.

It is an amenable number.

2145072957 is a deficient number, since it is larger than the sum of its proper divisors (813648483).

2145072957 is a wasteful number, since it uses less digits than its factorization.

2145072957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24656043.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 2145072957 is about 46314.9323328881. The cubic root of 2145072957 is about 1289.6762116274.

The spelling of 2145072957 in words is "two billion, one hundred forty-five million, seventy-two thousand, nine hundred fifty-seven".