1702979121 has 4 divisors (see below), whose sum is σ = 2270638832. Its totient is φ = 1135319412.

The previous prime is 1702979051. The next prime is 1702979123. The reversal of 1702979121 is 1219792071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1702979121 - 2¹⁵ = 1702946353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1702979121.

It is not an unprimeable number, because it can be changed into a prime (1702979123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283829851 + ... + 283829856.

It is an arithmetic number, because the mean of its divisors is an integer number (567659708).

Almost surely, 2^1702979121 is an apocalyptic number.

It is an amenable number.

1702979121 is a deficient number, since it is larger than the sum of its proper divisors (567659711).

1702979121 is an equidigital number, since it uses as much as digits as its factorization.

1702979121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567659710.

The product of its (nonzero) digits is 15876, while the sum is 39.

The square root of 1702979121 is about 41267.1675911977. The cubic root of 1702979121 is about 1194.1799479915.

The spelling of 1702979121 in words is "one billion, seven hundred two million, nine hundred seventy-nine thousand, one hundred twenty-one".