26491913 has 16 divisors (see below), whose sum is σ = 31190016. Its totient is φ = 22029840.

The previous prime is 26491903. The next prime is 26491921. The reversal of 26491913 is 31919462.

It is not a de Polignac number, because 26491913 - 2⁶ = 26491849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26491903) 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, 85028 + ... + 85338.

It is an arithmetic number, because the mean of its divisors is an integer number (1949376).

Almost surely, 2^26491913 is an apocalyptic number.

It is an amenable number.

26491913 is a deficient number, since it is larger than the sum of its proper divisors (4698103).

26491913 is a wasteful number, since it uses less digits than its factorization.

26491913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its digits is 11664, while the sum is 35.

The square root of 26491913 is about 5147.0295316814. The cubic root of 26491913 is about 298.1062673719.

The spelling of 26491913 in words is "twenty-six million, four hundred ninety-one thousand, nine hundred thirteen".