1194861972 has 12 divisors (see below), whose sum is σ = 2788011296. Its totient is φ = 398287320.

The previous prime is 1194861959. The next prime is 1194861977. The reversal of 1194861972 is 2791684911.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1194861977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49785904 + ... + 49785927.

Almost surely, 2^1194861972 is an apocalyptic number.

1194861972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1194861972 is an abundant number, since it is smaller than the sum of its proper divisors (1593149324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1194861972 is a wasteful number, since it uses less digits than its factorization.

1194861972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99571838 (or 99571836 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 1194861972 is about 34566.7755510982. The cubic root of 1194861972 is about 1061.1397412091.

It can be divided in two parts, 11948 and 61972, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 1194861972 in words is "one billion, one hundred ninety-four million, eight hundred sixty-one thousand, nine hundred seventy-two".