1190639197 has 4 divisors (see below), whose sum is σ = 1298879136. Its totient is φ = 1082399260.

The previous prime is 1190639159. The next prime is 1190639213. The reversal of 1190639197 is 7919360911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1190639197 - 2⁷ = 1190639069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190634197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54119953 + ... + 54119974.

It is an arithmetic number, because the mean of its divisors is an integer number (324719784).

Almost surely, 2^1190639197 is an apocalyptic number.

It is an amenable number.

1190639197 is a deficient number, since it is larger than the sum of its proper divisors (108239939).

1190639197 is a wasteful number, since it uses less digits than its factorization.

1190639197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108239938.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 1190639197 is about 34505.6400752109. The cubic root of 1190639197 is about 1059.8882037666. Note that the first 3 decimals are identical.

The spelling of 1190639197 in words is "one billion, one hundred ninety million, six hundred thirty-nine thousand, one hundred ninety-seven".