1969033990 has 64 divisors (see below), whose sum is σ = 4427716608. Its totient is φ = 612489600.

The previous prime is 1969033981. The next prime is 1969033991. The reversal of 1969033990 is 993309691.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969033991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426595 + ... + 431185.

It is an arithmetic number, because the mean of its divisors is an integer number (69183072).

Almost surely, 2^1969033990 is an apocalyptic number.

1969033990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1969033990 is an abundant number, since it is smaller than the sum of its proper divisors (2458682618).

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

1969033990 is a wasteful number, since it uses less digits than its factorization.

1969033990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 1969033990 is about 44373.7984626063. The cubic root of 1969033990 is about 1253.3847443985.

The spelling of 1969033990 in words is "one billion, nine hundred sixty-nine million, thirty-three thousand, nine hundred ninety".