1969372390 has 16 divisors (see below), whose sum is σ = 3546655632. Its totient is φ = 787352224.

The previous prime is 1969372367. The next prime is 1969372399. The reversal of 1969372390 is 932739691.

It is a super-2 number, since 2×1969372390² = 7756855220988624200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969372399) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28309 + ... + 68848.

It is an arithmetic number, because the mean of its divisors is an integer number (221665977).

Almost surely, 2^1969372390 is an apocalyptic number.

1969372390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1969372390 is a deficient number, since it is larger than the sum of its proper divisors (1577283242).

1969372390 is a wasteful number, since it uses less digits than its factorization.

1969372390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99191.

The product of its (nonzero) digits is 551124, while the sum is 49.

The square root of 1969372390 is about 44377.6113597837. The cubic root of 1969372390 is about 1253.4565429054.

The spelling of 1969372390 in words is "one billion, nine hundred sixty-nine million, three hundred seventy-two thousand, three hundred ninety".