1157745478 has 8 divisors (see below), whose sum is σ = 1736767872. Its totient is φ = 578822856.

The previous prime is 1157745467. The next prime is 1157745493. The reversal of 1157745478 is 8745477511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20976 + ... + 52492.

It is an arithmetic number, because the mean of its divisors is an integer number (217095984).

Almost surely, 2^1157745478 is an apocalyptic number.

1157745478 is a deficient number, since it is larger than the sum of its proper divisors (579022394).

1157745478 is a wasteful number, since it uses less digits than its factorization.

1157745478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49886.

The product of its digits is 1097600, while the sum is 49.

The square root of 1157745478 is about 34025.6591119114. The cubic root of 1157745478 is about 1050.0364244356.

The spelling of 1157745478 in words is "one billion, one hundred fifty-seven million, seven hundred forty-five thousand, four hundred seventy-eight".