1438454655 has 36 divisors (see below), whose sum is σ = 2740603320. Its totient is φ = 697429920.

The previous prime is 1438454617. The next prime is 1438454683. The reversal of 1438454655 is 5564548341.

1438454655 is a `hidden beast` number, since 143 + 8 + 45 + 465 + 5 = 666.

It is not a de Polignac number, because 1438454655 - 2¹⁴ = 1438438271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1438454655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 126645 + ... + 137534.

It is an arithmetic number, because the mean of its divisors is an integer number (76127870).

Almost surely, 2^1438454655 is an apocalyptic number.

1438454655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1438454655 is a deficient number, since it is larger than the sum of its proper divisors (1302148665).

1438454655 is a wasteful number, since it uses less digits than its factorization.

1438454655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264212 (or 264198 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The square root of 1438454655 is about 37926.9647480523. The cubic root of 1438454655 is about 1128.8391385917.

The spelling of 1438454655 in words is "one billion, four hundred thirty-eight million, four hundred fifty-four thousand, six hundred fifty-five".