2156757346 has 4 divisors (see below), whose sum is σ = 3235136022. Its totient is φ = 1078378672.

The previous prime is 2156757329. The next prime is 2156757359. The reversal of 2156757346 is 6437576512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2151939321 + 4818025 = 46389^2 + 2195^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2156757296 and 2156757305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539189335 + ... + 539189338.

Almost surely, 2^2156757346 is an apocalyptic number.

2156757346 is a deficient number, since it is larger than the sum of its proper divisors (1078378676).

2156757346 is a wasteful number, since it uses less digits than its factorization.

2156757346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078378675.

The product of its digits is 1058400, while the sum is 46.

The square root of 2156757346 is about 46440.9016493005. The cubic root of 2156757346 is about 1292.0136302147.

The spelling of 2156757346 in words is "two billion, one hundred fifty-six million, seven hundred fifty-seven thousand, three hundred forty-six".