1026939290 has 32 divisors (see below), whose sum is σ = 2004080400. Its totient is φ = 376625664.

The previous prime is 1026939257. The next prime is 1026939299. The reversal of 1026939290 is 929396201.

It can be written as a sum of positive squares in 8 ways, for example, as 317302969 + 709636321 = 17813^2 + 26639^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1026939299) 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, 7139 + ... + 45878.

Almost surely, 2^1026939290 is an apocalyptic number.

1026939290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1026939290 is a deficient number, since it is larger than the sum of its proper divisors (977141110).

1026939290 is a wasteful number, since it uses less digits than its factorization.

1026939290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53186.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1026939290 is about 32045.8934966713. The cubic root of 1026939290 is about 1008.9003127518.

The spelling of 1026939290 in words is "one billion, twenty-six million, nine hundred thirty-nine thousand, two hundred ninety".