1557652129 has 16 divisors (see below), whose sum is σ = 1793292480. Its totient is φ = 1338068160.

The previous prime is 1557652123. The next prime is 1557652157. The reversal of 1557652129 is 9212567551.

It is not a de Polignac number, because 1557652129 - 2¹⁷ = 1557521057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557652123) 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 15 ways as a sum of consecutive naturals, for example, 73587 + ... + 92359.

It is an arithmetic number, because the mean of its divisors is an integer number (112080780).

Almost surely, 2^1557652129 is an apocalyptic number.

1557652129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1557652129 is a deficient number, since it is larger than the sum of its proper divisors (235640351).

1557652129 is a wasteful number, since it uses less digits than its factorization.

1557652129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200.

The product of its digits is 189000, while the sum is 43.

The square root of 1557652129 is about 39467.1018571164. The cubic root of 1557652129 is about 1159.1958678291.

The spelling of 1557652129 in words is "one billion, five hundred fifty-seven million, six hundred fifty-two thousand, one hundred twenty-nine".