2109261451 has 16 divisors (see below), whose sum is σ = 2445901920. Its totient is φ = 1797652480.

The previous prime is 2109261449. The next prime is 2109261481. The reversal of 2109261451 is 1541629012.

It is a cyclic number.

It is not a de Polignac number, because 2109261451 - 2¹ = 2109261449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2109261431) 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, 26115 + ... + 70003.

It is an arithmetic number, because the mean of its divisors is an integer number (152868870).

Almost surely, 2^2109261451 is an apocalyptic number.

2109261451 is a deficient number, since it is larger than the sum of its proper divisors (336640469).

2109261451 is a wasteful number, since it uses less digits than its factorization.

2109261451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44174.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2109261451 is about 45926.6964956114. The cubic root of 2109261451 is about 1282.4589473210.

The spelling of 2109261451 in words is "two billion, one hundred nine million, two hundred sixty-one thousand, four hundred fifty-one".