1199890931 has 2 divisors, whose sum is σ = 1199890932. Its totient is φ = 1199890930.

The previous prime is 1199890919. The next prime is 1199890943. The reversal of 1199890931 is 1390989911.

It is a balanced prime because it is at equal distance from previous prime (1199890919) and next prime (1199890943).

It is a cyclic number.

It is not a de Polignac number, because 1199890931 - 2¹⁰ = 1199889907 is a prime.

It is a super-2 number, since 2×1199890931² = 2879476492592093522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1199890931.

It is not a weakly prime, because it can be changed into another prime (1199890231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599945465 + 599945466.

It is an arithmetic number, because the mean of its divisors is an integer number (599945466).

Almost surely, 2^1199890931 is an apocalyptic number.

1199890931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199890931 is an equidigital number, since it uses as much as digits as its factorization.

1199890931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 50.

The square root of 1199890931 is about 34639.4418401914. The cubic root of 1199890931 is about 1062.6263728995.

The spelling of 1199890931 in words is "one billion, one hundred ninety-nine million, eight hundred ninety thousand, nine hundred thirty-one".