1171779340 has 24 divisors (see below), whose sum is σ = 2488389120. Its totient is φ = 463444608.

The previous prime is 1171779337. The next prime is 1171779347. The reversal of 1171779340 is 439771711.

It is a junction number, because it is equal to n+sod(n) for n = 1171779293 and 1171779302.

It is not an unprimeable number, because it can be changed into a prime (1171779347) 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, 327372 + ... + 330931.

It is an arithmetic number, because the mean of its divisors is an integer number (103682880).

Almost surely, 2^1171779340 is an apocalyptic number.

1171779340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171779340 is an abundant number, since it is smaller than the sum of its proper divisors (1316609780).

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

1171779340 is a wasteful number, since it uses less digits than its factorization.

1171779340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658401 (or 658399 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 1171779340 is about 34231.2626118290. The cubic root of 1171779340 is about 1054.2621436399.

The spelling of 1171779340 in words is "one billion, one hundred seventy-one million, seven hundred seventy-nine thousand, three hundred forty".