1197400851 has 12 divisors (see below), whose sum is σ = 1734147480. Its totient is φ = 796158720.

The previous prime is 1197400829. The next prime is 1197400873. The reversal of 1197400851 is 1580047911.

It is an interprime number because it is at equal distance from previous prime (1197400829) and next prime (1197400873).

It is not a de Polignac number, because 1197400851 - 2⁵ = 1197400819 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1197400801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172110 + ... + 178931.

It is an arithmetic number, because the mean of its divisors is an integer number (144512290).

Almost surely, 2^1197400851 is an apocalyptic number.

1197400851 is a deficient number, since it is larger than the sum of its proper divisors (536746629).

1197400851 is a wasteful number, since it uses less digits than its factorization.

1197400851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351426 (or 351423 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1197400851 is about 34603.4803307413. The cubic root of 1197400851 is about 1061.8907901573.

The spelling of 1197400851 in words is "one billion, one hundred ninety-seven million, four hundred thousand, eight hundred fifty-one".