1157784897 has 8 divisors (see below), whose sum is σ = 1543892256. Its totient is φ = 771767072.

The previous prime is 1157784889. The next prime is 1157784923. The reversal of 1157784897 is 7984877511.

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

It is a cyclic number.

It is not a de Polignac number, because 1157784897 - 2³ = 1157784889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157783897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18418 + ... + 51524.

It is an arithmetic number, because the mean of its divisors is an integer number (192986532).

Almost surely, 2^1157784897 is an apocalyptic number.

It is an amenable number.

1157784897 is a deficient number, since it is larger than the sum of its proper divisors (386107359).

1157784897 is a wasteful number, since it uses less digits than its factorization.

1157784897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44767.

The product of its digits is 3951360, while the sum is 57.

The square root of 1157784897 is about 34026.2383610061. The cubic root of 1157784897 is about 1050.0483415385.

The spelling of 1157784897 in words is "one billion, one hundred fifty-seven million, seven hundred eighty-four thousand, eight hundred ninety-seven".