1026405213 has 16 divisors (see below), whose sum is σ = 1449208320. Its totient is φ = 644368176.

The previous prime is 1026405173. The next prime is 1026405221. The reversal of 1026405213 is 3125046201.

It is not a de Polignac number, because 1026405213 - 2⁸ = 1026404957 is a prime.

It is a super-2 number, since 2×1026405213² = 2107015322547150738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026405253) 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, 44395 + ... + 63432.

It is an arithmetic number, because the mean of its divisors is an integer number (90575520).

Almost surely, 2^1026405213 is an apocalyptic number.

It is an amenable number.

1026405213 is a deficient number, since it is larger than the sum of its proper divisors (422803107).

1026405213 is a wasteful number, since it uses less digits than its factorization.

1026405213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108016.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1026405213 is about 32037.5594107916. The cubic root of 1026405213 is about 1008.7253839143.

The spelling of 1026405213 in words is "one billion, twenty-six million, four hundred five thousand, two hundred thirteen".