1555870130 has 8 divisors (see below), whose sum is σ = 2800566252. Its totient is φ = 622348048.

The previous prime is 1555870123. The next prime is 1555870139. The reversal of 1555870130 is 310785551.

It can be written as a sum of positive squares in 2 ways, for example, as 1526699329 + 29170801 = 39073^2 + 5401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1555870130² = 4841463722852433800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1555870139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77793497 + ... + 77793516.

Almost surely, 2^1555870130 is an apocalyptic number.

1555870130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1555870130 is a deficient number, since it is larger than the sum of its proper divisors (1244696122).

1555870130 is a wasteful number, since it uses less digits than its factorization.

1555870130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155587020.

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 1555870130 is about 39444.5196446857. The cubic root of 1555870130 is about 1158.7536479704.

The spelling of 1555870130 in words is "one billion, five hundred fifty-five million, eight hundred seventy thousand, one hundred thirty".