1129969972 has 24 divisors (see below), whose sum is σ = 1995585984. Its totient is φ = 559818432.

The previous prime is 1129969961. The next prime is 1129969979. The reversal of 1129969972 is 2799699211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129969979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352963 + ... + 356149.

It is an arithmetic number, because the mean of its divisors is an integer number (83149416).

Almost surely, 2^1129969972 is an apocalyptic number.

It is an amenable number.

1129969972 is a deficient number, since it is larger than the sum of its proper divisors (865616012).

1129969972 is a wasteful number, since it uses less digits than its factorization.

1129969972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 55.

The square root of 1129969972 is about 33615.0259854131. The cubic root of 1129969972 is about 1041.5712110958.

The spelling of 1129969972 in words is "one billion, one hundred twenty-nine million, nine hundred sixty-nine thousand, nine hundred seventy-two".