1316723650 has 48 divisors (see below), whose sum is σ = 2717102880. Its totient is φ = 470681600.

The previous prime is 1316723647. The next prime is 1316723657. The reversal of 1316723650 is 563276131.

It is a super-2 number, since 2×1316723650² = 3467522340938645000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316723657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12162 + ... + 52738.

It is an arithmetic number, because the mean of its divisors is an integer number (56606310).

Almost surely, 2^1316723650 is an apocalyptic number.

1316723650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1316723650 is an abundant number, since it is smaller than the sum of its proper divisors (1400379230).

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

1316723650 is a wasteful number, since it uses less digits than its factorization.

1316723650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40659 (or 40654 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 1316723650 is about 36286.6869526552. The cubic root of 1316723650 is about 1096.0529754217.

Adding to 1316723650 its reverse (563276131), we get a palindrome (1879999781).

The spelling of 1316723650 in words is "one billion, three hundred sixteen million, seven hundred twenty-three thousand, six hundred fifty".