1191949474 has 16 divisors (see below), whose sum is σ = 1860667200. Its totient is φ = 571973584.

The previous prime is 1191949463. The next prime is 1191949513. The reversal of 1191949474 is 4749491911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51844 + ... + 71215.

It is an arithmetic number, because the mean of its divisors is an integer number (116291700).

Almost surely, 2^1191949474 is an apocalyptic number.

1191949474 is a deficient number, since it is larger than the sum of its proper divisors (668717726).

1191949474 is a wasteful number, since it uses less digits than its factorization.

1191949474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123257.

The product of its digits is 326592, while the sum is 49.

The square root of 1191949474 is about 34524.6212723616. The cubic root of 1191949474 is about 1060.2768571948.

The spelling of 1191949474 in words is "one billion, one hundred ninety-one million, nine hundred forty-nine thousand, four hundred seventy-four".