1969201390 has 32 divisors (see below), whose sum is σ = 3879814176. Its totient is φ = 715167360.

The previous prime is 1969201387. The next prime is 1969201397. The reversal of 1969201390 is 931029691.

It is a super-3 number, since 3×1969201390³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969201397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116232 + ... + 132091.

It is an arithmetic number, because the mean of its divisors is an integer number (121244193).

Almost surely, 2^1969201390 is an apocalyptic number.

1969201390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1969201390 is a deficient number, since it is larger than the sum of its proper divisors (1910612786).

1969201390 is a wasteful number, since it uses less digits than its factorization.

1969201390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248404.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 1969201390 is about 44375.6846707744. The cubic root of 1969201390 is about 1253.4202627731.

The spelling of 1969201390 in words is "one billion, nine hundred sixty-nine million, two hundred one thousand, three hundred ninety".