15734869749 has 6 divisors (see below), whose sum is σ = 22728145206. Its totient is φ = 10489913160.

The previous prime is 15734869723. The next prime is 15734869763. The reversal of 15734869749 is 94796843751.

15734869749 is a `hidden beast` number, since 15 + 73 + 486 + 9 + 74 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8701531524 + 7033338225 = 93282^2 + 83865^2 .

It is not a de Polignac number, because 15734869749 - 2⁷ = 15734869621 is a prime.

It is a super-3 number, since 3×15734869749³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15734869849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 874159422 + ... + 874159439.

It is an arithmetic number, because the mean of its divisors is an integer number (3788024201).

Almost surely, 2^15734869749 is an apocalyptic number.

It is an amenable number.

15734869749 is a deficient number, since it is larger than the sum of its proper divisors (6993275457).

15734869749 is a wasteful number, since it uses less digits than its factorization.

15734869749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748318867 (or 1748318864 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 15734869749 in words is "fifteen billion, seven hundred thirty-four million, eight hundred sixty-nine thousand, seven hundred forty-nine".