1969942320 has 240 divisors, whose sum is σ = 7045665120. Its totient is φ = 491544576.

The previous prime is 1969942309. The next prime is 1969942361. The reversal of 1969942320 is 232499691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2778126 + ... + 2778834.

It is an arithmetic number, because the mean of its divisors is an integer number (29356938).

Almost surely, 2^1969942320 is an apocalyptic number.

1969942320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1969942320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3522832560).

1969942320 is an abundant number, since it is smaller than the sum of its proper divisors (5075722800).

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

1969942320 is a wasteful number, since it uses less digits than its factorization.

1969942320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1969942320 is about 44384.0322638671. The cubic root of 1969942320 is about 1253.5774466662.

The spelling of 1969942320 in words is "one billion, nine hundred sixty-nine million, nine hundred forty-two thousand, three hundred twenty".