26951891 has 2 divisors, whose sum is σ = 26951892. Its totient is φ = 26951890.

The previous prime is 26951867. The next prime is 26951941. The reversal of 26951891 is 19815962.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26951891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26951831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13475945 + 13475946.

It is an arithmetic number, because the mean of its divisors is an integer number (13475946).

Almost surely, 2^26951891 is an apocalyptic number.

26951891 is a deficient number, since it is larger than the sum of its proper divisors (1).

26951891 is an equidigital number, since it uses as much as digits as its factorization.

26951891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 41.

The square root of 26951891 is about 5191.5210680493. The cubic root of 26951891 is about 299.8217125848.

The spelling of 26951891 in words is "twenty-six million, nine hundred fifty-one thousand, eight hundred ninety-one".