2129694741 has 16 divisors (see below), whose sum is σ = 3156289920. Its totient is φ = 1419262560.

The previous prime is 2129694653. The next prime is 2129694751. The reversal of 2129694741 is 1474969212.

It is not a de Polignac number, because 2129694741 - 2¹³ = 2129686549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129694751) 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, 66376 + ... + 93086.

It is an arithmetic number, because the mean of its divisors is an integer number (197268120).

Almost surely, 2^2129694741 is an apocalyptic number.

It is an amenable number.

2129694741 is a deficient number, since it is larger than the sum of its proper divisors (1026595179).

2129694741 is a wasteful number, since it uses less digits than its factorization.

2129694741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29673 (or 29667 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2129694741 is about 46148.6158080608. The cubic root of 2129694741 is about 1286.5868833437.

The spelling of 2129694741 in words is "two billion, one hundred twenty-nine million, six hundred ninety-four thousand, seven hundred forty-one".