1445620431 has 16 divisors (see below), whose sum is σ = 1941613056. Its totient is φ = 956702016.

The previous prime is 1445620417. The next prime is 1445620439. The reversal of 1445620431 is 1340265441.

It is not a de Polignac number, because 1445620431 - 2⁹ = 1445619919 is a prime.

It is a super-2 number, since 2×1445620431² = 4179636861049251522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445620439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699706 + ... + 701768.

It is an arithmetic number, because the mean of its divisors is an integer number (121350816).

Almost surely, 2^1445620431 is an apocalyptic number.

1445620431 is a deficient number, since it is larger than the sum of its proper divisors (495992625).

1445620431 is a wasteful number, since it uses less digits than its factorization.

1445620431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1445620431 is about 38021.3154822397. The cubic root of 1445620431 is about 1130.7105018210.

Adding to 1445620431 its reverse (1340265441), we get a palindrome (2785885872).

The spelling of 1445620431 in words is "one billion, four hundred forty-five million, six hundred twenty thousand, four hundred thirty-one".