1318553950 has 24 divisors (see below), whose sum is σ = 2802869712. Its totient is φ = 452075520.

The previous prime is 1318553939. The next prime is 1318553987. The reversal of 1318553950 is 593558131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1883299 + ... + 1883998.

It is an arithmetic number, because the mean of its divisors is an integer number (116786238).

Almost surely, 2^1318553950 is an apocalyptic number.

1318553950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1318553950 is an abundant number, since it is smaller than the sum of its proper divisors (1484315762).

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

1318553950 is a wasteful number, since it uses less digits than its factorization.

1318553950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767316 (or 3767311 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 1318553950 is about 36311.8981877841. The cubic root of 1318553950 is about 1096.5605931882.

The spelling of 1318553950 in words is "one billion, three hundred eighteen million, five hundred fifty-three thousand, nine hundred fifty".