1131761847 has 8 divisors (see below), whose sum is σ = 1588437760. Its totient is φ = 714796920.

The previous prime is 1131761767. The next prime is 1131761861. The reversal of 1131761847 is 7481671311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131761847 - 2¹⁶ = 1131696311 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 (1131761867) 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, 9927679 + ... + 9927792.

It is an arithmetic number, because the mean of its divisors is an integer number (198554720).

Almost surely, 2^1131761847 is an apocalyptic number.

1131761847 is a deficient number, since it is larger than the sum of its proper divisors (456675913).

1131761847 is a wasteful number, since it uses less digits than its factorization.

1131761847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19855493.

The product of its digits is 28224, while the sum is 39.

The square root of 1131761847 is about 33641.6683147551. The cubic root of 1131761847 is about 1042.1214852284.

The spelling of 1131761847 in words is "one billion, one hundred thirty-one million, seven hundred sixty-one thousand, eight hundred forty-seven".