2135907949 has 32 divisors (see below), whose sum is σ = 2595631104. Its totient is φ = 1718133120.

The previous prime is 2135907947. The next prime is 2135907959. The reversal of 2135907949 is 9497095312.

It is not a de Polignac number, because 2135907949 - 2¹ = 2135907947 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135907947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3090694 + ... + 3091384.

It is an arithmetic number, because the mean of its divisors is an integer number (81113472).

Almost surely, 2^2135907949 is an apocalyptic number.

It is an amenable number.

2135907949 is a deficient number, since it is larger than the sum of its proper divisors (459723155).

2135907949 is a wasteful number, since it uses less digits than its factorization.

2135907949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 2135907949 is about 46215.8841633480. The cubic root of 2135907949 is about 1287.8368388040.

The spelling of 2135907949 in words is "two billion, one hundred thirty-five million, nine hundred seven thousand, nine hundred forty-nine".