1145575197990 has 48 divisors (see below), whose sum is σ = 2980377436608. Its totient is φ = 305293701888.

The previous prime is 1145575197979. The next prime is 1145575198013. The reversal of 1145575197990 is 997915755411.

1145575197990 is a `hidden beast` number, since 1 + 1 + 4 + 557 + 5 + 1 + 9 + 79 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3877939 + ... + 4162878.

It is an arithmetic number, because the mean of its divisors is an integer number (62091196596).

Almost surely, 2^{1145575197990} is an apocalyptic number.

1145575197990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145575197990 is an abundant number, since it is smaller than the sum of its proper divisors (1834802238618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145575197990 is a wasteful number, since it uses less digits than its factorization.

1145575197990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042413 (or 8042410 counting only the distinct ones).

The product of its (nonzero) digits is 17860500, while the sum is 63.

The spelling of 1145575197990 in words is "one trillion, one hundred forty-five billion, five hundred seventy-five million, one hundred ninety-seven thousand, nine hundred ninety".