1968957290 has 32 divisors (see below), whose sum is σ = 3622682880. Its totient is φ = 770313024.

The previous prime is 1968957271. The next prime is 1968957293. The reversal of 1968957290 is 927598691.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1968957293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72884 + ... + 96176.

It is an arithmetic number, because the mean of its divisors is an integer number (113208840).

Almost surely, 2^1968957290 is an apocalyptic number.

1968957290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1968957290 is a deficient number, since it is larger than the sum of its proper divisors (1653725590).

1968957290 is a wasteful number, since it uses less digits than its factorization.

1968957290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23486.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The square root of 1968957290 is about 44372.9342054365. The cubic root of 1968957290 is about 1253.3684697754.

The spelling of 1968957290 in words is "one billion, nine hundred sixty-eight million, nine hundred fifty-seven thousand, two hundred ninety".