1445626642 has 4 divisors (see below), whose sum is σ = 2168439966. Its totient is φ = 722813320.

The previous prime is 1445626537. The next prime is 1445626643. The reversal of 1445626642 is 2466265441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2466265441 = 61 ⋅40430581.

It can be written as a sum of positive squares in only one way, i.e., 1334513961 + 111112681 = 36531^2 + 10541^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1445626595 and 1445626604.

It is not an unprimeable number, because it can be changed into a prime (1445626643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361406659 + ... + 361406662.

Almost surely, 2^1445626642 is an apocalyptic number.

1445626642 is a deficient number, since it is larger than the sum of its proper divisors (722813324).

1445626642 is an equidigital number, since it uses as much as digits as its factorization.

1445626642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722813323.

The product of its digits is 276480, while the sum is 40.

The square root of 1445626642 is about 38021.3971600203. The cubic root of 1445626642 is about 1130.7121211564.

The spelling of 1445626642 in words is "one billion, four hundred forty-five million, six hundred twenty-six thousand, six hundred forty-two".