1451402643 has 16 divisors (see below), whose sum is σ = 2003097600. Its totient is φ = 933693600.

The previous prime is 1451402639. The next prime is 1451402669. The reversal of 1451402643 is 3462041541.

It is not a de Polignac number, because 1451402643 - 2² = 1451402639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1451402643.

It is not an unprimeable number, because it can be changed into a prime (1451402243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191068 + ... + 198518.

It is an arithmetic number, because the mean of its divisors is an integer number (125193600).

Almost surely, 2^1451402643 is an apocalyptic number.

1451402643 is a deficient number, since it is larger than the sum of its proper divisors (551694957).

1451402643 is a wasteful number, since it uses less digits than its factorization.

1451402643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722.

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

The square root of 1451402643 is about 38097.2786823416. The cubic root of 1451402643 is about 1132.2160399908.

The spelling of 1451402643 in words is "one billion, four hundred fifty-one million, four hundred two thousand, six hundred forty-three".