1157648745 has 72 divisors (see below), whose sum is σ = 2163716352. Its totient is φ = 528028160.

The previous prime is 1157648693. The next prime is 1157648759. The reversal of 1157648745 is 5478467511.

It is not a de Polignac number, because 1157648745 - 2²³ = 1149260137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157648694 and 1157648703.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 523432 + ... + 525638.

It is an arithmetic number, because the mean of its divisors is an integer number (30051616).

Almost surely, 2^1157648745 is an apocalyptic number.

1157648745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1157648745 is a deficient number, since it is larger than the sum of its proper divisors (1006067607).

1157648745 is a wasteful number, since it uses less digits than its factorization.

1157648745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2243 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 1157648745 is about 34024.2376108562. The cubic root of 1157648745 is about 1050.0071790892.

The spelling of 1157648745 in words is "one billion, one hundred fifty-seven million, six hundred forty-eight thousand, seven hundred forty-five".