2258629779 has 16 divisors (see below), whose sum is σ = 3443195648. Its totient is φ = 1290092832.

The previous prime is 2258629759. The next prime is 2258629801. The reversal of 2258629779 is 9779268522.

It is a happy number.

It is not a de Polignac number, because 2258629779 - 2²¹ = 2256532627 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2258629759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30009 + ... + 73605.

It is an arithmetic number, because the mean of its divisors is an integer number (215199728).

Almost surely, 2^2258629779 is an apocalyptic number.

2258629779 is a deficient number, since it is larger than the sum of its proper divisors (1184565869).

2258629779 is a wasteful number, since it uses less digits than its factorization.

2258629779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46074.

The product of its digits is 7620480, while the sum is 57.

The square root of 2258629779 is about 47525.0437032940. The cubic root of 2258629779 is about 1312.0438501217.

It can be divided in two parts, 225862 and 9779, that added together give a triangular number (235641 = T₆₈₆).

The spelling of 2258629779 in words is "two billion, two hundred fifty-eight million, six hundred twenty-nine thousand, seven hundred seventy-nine".