1078661181 has 32 divisors (see below), whose sum is σ = 1590865920. Its totient is φ = 646027200.

The previous prime is 1078661161. The next prime is 1078661201. The reversal of 1078661181 is 1811668701.

It is an interprime number because it is at equal distance from previous prime (1078661161) and next prime (1078661201).

It is not a de Polignac number, because 1078661181 - 2²¹ = 1076564029 is a prime.

It is a super-2 number, since 2×1078661181² = 2327019886792629522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078661131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216286 + ... + 221216.

It is an arithmetic number, because the mean of its divisors is an integer number (49714560).

Almost surely, 2^1078661181 is an apocalyptic number.

It is an amenable number.

1078661181 is a deficient number, since it is larger than the sum of its proper divisors (512204739).

1078661181 is a wasteful number, since it uses less digits than its factorization.

1078661181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 1078661181 is about 32842.9776512423. The cubic root of 1078661181 is about 1025.5614393146.

The spelling of 1078661181 in words is "one billion, seventy-eight million, six hundred sixty-one thousand, one hundred eighty-one".