2609705490 has 32 divisors (see below), whose sum is σ = 7158049920. Its totient is φ = 596504064.

The previous prime is 2609705489. The next prime is 2609705491. The reversal of 2609705490 is 945079062.

It is an interprime number because it is at equal distance from previous prime (2609705489) and next prime (2609705491).

It is a super-2 number, since 2×2609705490² = 13621125489072280200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2609705491) 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, 6213375 + ... + 6213794.

It is an arithmetic number, because the mean of its divisors is an integer number (223689060).

Almost surely, 2^2609705490 is an apocalyptic number.

2609705490 is an abundant number, since it is smaller than the sum of its proper divisors (4548344430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2609705490 is a wasteful number, since it uses less digits than its factorization.

2609705490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427186.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2609705490 is about 51085.2766460161. The cubic root of 2609705490 is about 1376.7777318819. Note that the first 4 decimals are identical.

The spelling of 2609705490 in words is "two billion, six hundred nine million, seven hundred five thousand, four hundred ninety".