1618980029 has 16 divisors (see below), whose sum is σ = 1698030000. Its totient is φ = 1541928960.

The previous prime is 1618979983. The next prime is 1618980031. The reversal of 1618980029 is 9200898161.

It can be written as a sum of positive squares in 8 ways, for example, as 310711129 + 1308268900 = 17627^2 + 36170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618980029 - 2⁸ = 1618979773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618980089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1295597 + ... + 1296845.

It is an arithmetic number, because the mean of its divisors is an integer number (106126875).

Almost surely, 2^1618980029 is an apocalyptic number.

It is an amenable number.

1618980029 is a deficient number, since it is larger than the sum of its proper divisors (79049971).

1618980029 is a wasteful number, since it uses less digits than its factorization.

1618980029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 1618980029 is about 40236.5509083470. The cubic root of 1618980029 is about 1174.2137559445.

The spelling of 1618980029 in words is "one billion, six hundred eighteen million, nine hundred eighty thousand, twenty-nine".