1146925891 has 2 divisors, whose sum is σ = 1146925892. Its totient is φ = 1146925890.

The previous prime is 1146925877. The next prime is 1146925907. The reversal of 1146925891 is 1985296411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1146925891 is a prime.

It is a super-2 number, since 2×1146925891² = 2630877998892287762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1146925811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573462945 + 573462946.

It is an arithmetic number, because the mean of its divisors is an integer number (573462946).

Almost surely, 2^1146925891 is an apocalyptic number.

1146925891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146925891 is an equidigital number, since it uses as much as digits as its factorization.

1146925891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 46.

The square root of 1146925891 is about 33866.2943204597. The cubic root of 1146925891 is about 1046.7551804305.

The spelling of 1146925891 in words is "one billion, one hundred forty-six million, nine hundred twenty-five thousand, eight hundred ninety-one".