1427661530 has 64 divisors (see below), whose sum is σ = 2790052128. Its totient is φ = 523960320.

The previous prime is 1427661493. The next prime is 1427661541. The reversal of 1427661530 is 351667241.

It can be written as a sum of positive squares in 16 ways, for example, as 150528361 + 1277133169 = 12269^2 + 35737^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1738520 + ... + 1739340.

Almost surely, 2^1427661530 is an apocalyptic number.

1427661530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1427661530 is a deficient number, since it is larger than the sum of its proper divisors (1362390598).

1427661530 is a wasteful number, since it uses less digits than its factorization.

1427661530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1427661530 is about 37784.4085569696. The cubic root of 1427661530 is about 1126.0087163475.

The spelling of 1427661530 in words is "one billion, four hundred twenty-seven million, six hundred sixty-one thousand, five hundred thirty".