2691204126 has 16 divisors (see below), whose sum is σ = 5796439824. Its totient is φ = 828062784.

The previous prime is 2691204119. The next prime is 2691204127. The reversal of 2691204126 is 6214021962.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691204127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17251231 + ... + 17251386.

It is an arithmetic number, because the mean of its divisors is an integer number (362277489).

Almost surely, 2^2691204126 is an apocalyptic number.

2691204126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2691204126 is an abundant number, since it is smaller than the sum of its proper divisors (3105235698).

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

2691204126 is a wasteful number, since it uses less digits than its factorization.

2691204126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34502635.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2691204126 is about 51876.8168452923. The cubic root of 2691204126 is about 1390.9629002604.

The spelling of 2691204126 in words is "two billion, six hundred ninety-one million, two hundred four thousand, one hundred twenty-six".