1445583690 has 48 divisors (see below), whose sum is σ = 3787239456. Its totient is φ = 382543200.

The previous prime is 1445583611. The next prime is 1445583731. The reversal of 1445583690 is 963855441.

1445583690 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 583 + 69 + 0 = 666.

It is a super-2 number, since 2×1445583690² = 4179424409588032200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49516 + ... + 73095.

It is an arithmetic number, because the mean of its divisors is an integer number (78900822).

Almost surely, 2^1445583690 is an apocalyptic number.

1445583690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1445583690 is an abundant number, since it is smaller than the sum of its proper divisors (2341655766).

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

1445583690 is a wasteful number, since it uses less digits than its factorization.

1445583690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122755 (or 122752 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 1445583690 is about 38020.8323159817. The cubic root of 1445583690 is about 1130.7009225923.

The spelling of 1445583690 in words is "one billion, four hundred forty-five million, five hundred eighty-three thousand, six hundred ninety".