1469378640 has 40 divisors (see below), whose sum is σ = 4555074528. Its totient is φ = 391834240.

The previous prime is 1469378627. The next prime is 1469378681. The reversal of 1469378640 is 468739641.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1469378640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3060966 + ... + 3061445.

Almost surely, 2^1469378640 is an apocalyptic number.

1469378640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1469378640 is an abundant number, since it is smaller than the sum of its proper divisors (3085695888).

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

1469378640 is a wasteful number, since it uses less digits than its factorization.

1469378640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122427 (or 6122421 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 1469378640 is about 38332.4750048833. The cubic root of 1469378640 is about 1136.8711371638.

The spelling of 1469378640 in words is "one billion, four hundred sixty-nine million, three hundred seventy-eight thousand, six hundred forty".