1197257893 has 8 divisors (see below), whose sum is σ = 1345413888. Its totient is φ = 1057110384.

The previous prime is 1197257857. The next prime is 1197257947. The reversal of 1197257893 is 3987527911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197257893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1197257893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197257693) 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, 2001805 + ... + 2002402.

It is an arithmetic number, because the mean of its divisors is an integer number (168176736).

Almost surely, 2^1197257893 is an apocalyptic number.

1197257893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1197257893 is a deficient number, since it is larger than the sum of its proper divisors (148155995).

1197257893 is a wasteful number, since it uses less digits than its factorization.

1197257893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004243.

The product of its digits is 952560, while the sum is 52.

The square root of 1197257893 is about 34601.4146098104. The cubic root of 1197257893 is about 1061.8485286692.

The spelling of 1197257893 in words is "one billion, one hundred ninety-seven million, two hundred fifty-seven thousand, eight hundred ninety-three".