1115880061 has 8 divisors (see below), whose sum is σ = 1163062784. Its totient is φ = 1069396560.

The previous prime is 1115880049. The next prime is 1115880071. The reversal of 1115880061 is 1600885111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1115880061 - 2⁹ = 1115879549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115880001) 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, 171546 + ... + 177931.

It is an arithmetic number, because the mean of its divisors is an integer number (145382848).

Almost surely, 2^1115880061 is an apocalyptic number.

It is an amenable number.

1115880061 is a deficient number, since it is larger than the sum of its proper divisors (47182723).

1115880061 is a wasteful number, since it uses less digits than its factorization.

1115880061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349611.

The product of its (nonzero) digits is 1920, while the sum is 31.

The square root of 1115880061 is about 33404.7909887190. The cubic root of 1115880061 is about 1037.2238772806.

It can be divided in two parts, 11158 and 80061, that added together give a palindrome (91219).

The spelling of 1115880061 in words is "one billion, one hundred fifteen million, eight hundred eighty thousand, sixty-one".