1445709986 has 16 divisors (see below), whose sum is σ = 2558307840. Its totient is φ = 599603040.

The previous prime is 1445709983. The next prime is 1445709997. The reversal of 1445709986 is 6899075441.

It is not an unprimeable number, because it can be changed into a prime (1445709983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665131 + ... + 1665998.

It is an arithmetic number, because the mean of its divisors is an integer number (159894240).

Almost surely, 2^1445709986 is an apocalyptic number.

1445709986 is a deficient number, since it is larger than the sum of its proper divisors (1112597854).

1445709986 is a wasteful number, since it uses less digits than its factorization.

1445709986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331169.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1445709986 is about 38022.4931586554. The cubic root of 1445709986 is about 1130.7338502016.

The spelling of 1445709986 in words is "one billion, four hundred forty-five million, seven hundred nine thousand, nine hundred eighty-six".