1145888090 has 32 divisors (see below), whose sum is σ = 2152812816. Its totient is φ = 438730240.

The previous prime is 1145888089. The next prime is 1145888101. The reversal of 1145888090 is 908885411.

It can be written as a sum of positive squares in 8 ways, for example, as 173633329 + 972254761 = 13177^2 + 31181^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4637 + ... + 48096.

Almost surely, 2^1145888090 is an apocalyptic number.

1145888090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145888090 is a deficient number, since it is larger than the sum of its proper divisors (1006924726).

1145888090 is a wasteful number, since it uses less digits than its factorization.

1145888090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52834.

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 1145888090 is about 33850.9688192229. The cubic root of 1145888090 is about 1046.4393647935.

The spelling of 1145888090 in words is "one billion, one hundred forty-five million, eight hundred eighty-eight thousand, ninety".