1455451640 has 16 divisors (see below), whose sum is σ = 3274766280. Its totient is φ = 582180640.

The previous prime is 1455451637. The next prime is 1455451663. The reversal of 1455451640 is 461545541.

It is a self number, because there is not a number n which added to its sum of digits gives 1455451640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18193106 + ... + 18193185.

Almost surely, 2^1455451640 is an apocalyptic number.

1455451640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455451640 is an abundant number, since it is smaller than the sum of its proper divisors (1819314640).

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

1455451640 is a wasteful number, since it uses less digits than its factorization.

1455451640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36386302 (or 36386298 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 1455451640 is about 38150.3819115877. The cubic root of 1455451640 is about 1133.2679151014.

The spelling of 1455451640 in words is "one billion, four hundred fifty-five million, four hundred fifty-one thousand, six hundred forty".