1761866340 has 48 divisors (see below), whose sum is σ = 5312707008. Its totient is φ = 433689984.

The previous prime is 1761866317. The next prime is 1761866389. The reversal of 1761866340 is 436681671.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1761866292 and 1761866301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128622 + ... + 1130181.

It is an arithmetic number, because the mean of its divisors is an integer number (110681396).

Almost surely, 2^1761866340 is an apocalyptic number.

1761866340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1761866340 is an abundant number, since it is smaller than the sum of its proper divisors (3550840668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1761866340 is a wasteful number, since it uses less digits than its factorization.

1761866340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258828 (or 2258826 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1761866340 is about 41974.5916001574. The cubic root of 1761866340 is about 1207.7887671020.

The spelling of 1761866340 in words is "one billion, seven hundred sixty-one million, eight hundred sixty-six thousand, three hundred forty".