1026894990 has 32 divisors (see below), whose sum is σ = 2688598656. Its totient is φ = 248944160.

The previous prime is 1026894971. The next prime is 1026894991. The reversal of 1026894990 is 994986201.

It is a super-3 number, since 3×1026894990³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026894991) 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, 1555572 + ... + 1556231.

It is an arithmetic number, because the mean of its divisors is an integer number (84018708).

Almost surely, 2^1026894990 is an apocalyptic number.

1026894990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1026894990 is an abundant number, since it is smaller than the sum of its proper divisors (1661703666).

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

1026894990 is a wasteful number, since it uses less digits than its factorization.

1026894990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111824.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 1026894990 is about 32045.2022930110. The cubic root of 1026894990 is about 1008.8858052644.

The spelling of 1026894990 in words is "one billion, twenty-six million, eight hundred ninety-four thousand, nine hundred ninety".