1146405881 has 2 divisors, whose sum is σ = 1146405882. Its totient is φ = 1146405880.

The previous prime is 1146405857. The next prime is 1146405899. The reversal of 1146405881 is 1885046411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004319481 + 142086400 = 31691^2 + 11920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146405881 - 2²⁶ = 1079297017 is a prime.

It is a super-2 number, since 2×1146405881² = 2628492887982772322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1146405181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573202940 + 573202941.

It is an arithmetic number, because the mean of its divisors is an integer number (573202941).

Almost surely, 2^1146405881 is an apocalyptic number.

It is an amenable number.

1146405881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146405881 is an equidigital number, since it uses as much as digits as its factorization.

1146405881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1146405881 is about 33858.6160526387. The cubic root of 1146405881 is about 1046.5969588021.

The spelling of 1146405881 in words is "one billion, one hundred forty-six million, four hundred five thousand, eight hundred eighty-one".