1427438655 has 24 divisors (see below), whose sum is σ = 2475175248. Its totient is φ = 761008896.

The previous prime is 1427438653. The next prime is 1427438687. The reversal of 1427438655 is 5568347241.

It is not a de Polignac number, because 1427438655 - 2¹ = 1427438653 is a prime.

It is a super-2 number, since 2×1427438655² = 4075162227576418050, which contains 22 as substring.

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 1427438655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427438653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166504 + ... + 174866.

It is an arithmetic number, because the mean of its divisors is an integer number (103132302).

Almost surely, 2^1427438655 is an apocalyptic number.

1427438655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1427438655 is a deficient number, since it is larger than the sum of its proper divisors (1047736593).

1427438655 is a wasteful number, since it uses less digits than its factorization.

1427438655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12167 (or 12164 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 1427438655 is about 37781.4591433417. The cubic root of 1427438655 is about 1125.9501188327.

The spelling of 1427438655 in words is "one billion, four hundred twenty-seven million, four hundred thirty-eight thousand, six hundred fifty-five".