1167919947 has 48 divisors (see below), whose sum is σ = 1809753088. Its totient is φ = 724489920.

The previous prime is 1167919943. The next prime is 1167919993. The reversal of 1167919947 is 7499197611.

It is not a de Polignac number, because 1167919947 - 2² = 1167919943 is a prime.

It is a super-3 number, since 3×1167919947³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1167919893 and 1167919902.

It is not an unprimeable number, because it can be changed into a prime (1167919943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 803073 + ... + 804525.

Almost surely, 2^1167919947 is an apocalyptic number.

1167919947 is a deficient number, since it is larger than the sum of its proper divisors (641833141).

1167919947 is a wasteful number, since it uses less digits than its factorization.

1167919947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1597 counting only the distinct ones).

The product of its digits is 857304, while the sum is 54.

The square root of 1167919947 is about 34174.8437743320. The cubic root of 1167919947 is about 1053.1034251489.

It can be divided in two parts, 11679 and 19947, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 1167919947 in words is "one billion, one hundred sixty-seven million, nine hundred nineteen thousand, nine hundred forty-seven".