1969921323 has 16 divisors (see below), whose sum is σ = 2967868800. Its totient is φ = 1291020840.

The previous prime is 1969921321. The next prime is 1969921339. The reversal of 1969921323 is 3231299691.

It is not a de Polignac number, because 1969921323 - 2¹ = 1969921321 is a prime.

It is a super-3 number, since 3×1969921323³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1969921321) 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, 616713 + ... + 619898.

It is an arithmetic number, because the mean of its divisors is an integer number (185491800).

Almost surely, 2^1969921323 is an apocalyptic number.

1969921323 is a deficient number, since it is larger than the sum of its proper divisors (997947477).

1969921323 is a wasteful number, since it uses less digits than its factorization.

1969921323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236679 (or 1236673 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 1969921323 is about 44383.7957254672. The cubic root of 1969921323 is about 1253.5729928202.

The spelling of 1969921323 in words is "one billion, nine hundred sixty-nine million, nine hundred twenty-one thousand, three hundred twenty-three".