681181190 has 8 divisors (see below), whose sum is σ = 1226126160. Its totient is φ = 272472472.

The previous prime is 681181183. The next prime is 681181219. The reversal of 681181190 is 91181186.

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

It is a super-2 number, since 2×681181190² = 928015627219632200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681181190.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34059050 + ... + 34059069.

It is an arithmetic number, because the mean of its divisors is an integer number (153265770).

Almost surely, 2^681181190 is an apocalyptic number.

681181190 is a deficient number, since it is larger than the sum of its proper divisors (544944970).

681181190 is a wasteful number, since it uses less digits than its factorization.

681181190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68118126.

The product of its (nonzero) digits is 3456, while the sum is 35.

The square root of 681181190 is about 26099.4480784556. The cubic root of 681181190 is about 879.8748057092.

The spelling of 681181190 in words is "six hundred eighty-one million, one hundred eighty-one thousand, one hundred ninety".