1561792355 has 8 divisors (see below), whose sum is σ = 1879259712. Its totient is φ = 1246027968.

The previous prime is 1561792313. The next prime is 1561792357. The reversal of 1561792355 is 5532971651.

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

It is a cyclic number.

It is not a de Polignac number, because 1561792355 - 2⁶ = 1561792291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1561792357) 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 7 ways as a sum of consecutive naturals, for example, 423722 + ... + 427391.

It is an arithmetic number, because the mean of its divisors is an integer number (234907464).

Almost surely, 2^1561792355 is an apocalyptic number.

1561792355 is a deficient number, since it is larger than the sum of its proper divisors (317467357).

1561792355 is an equidigital number, since it uses as much as digits as its factorization.

1561792355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851485.

The product of its digits is 283500, while the sum is 44.

The square root of 1561792355 is about 39519.5186585060. The cubic root of 1561792355 is about 1160.2220034372. Note that the first 3 decimals are identical.

The spelling of 1561792355 in words is "one billion, five hundred sixty-one million, seven hundred ninety-two thousand, three hundred fifty-five".