1969042020 has 48 divisors (see below), whose sum is σ = 6014530368. Its totient is φ = 477343360.

The previous prime is 1969041967. The next prime is 1969042037. The reversal of 1969042020 is 202409691.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491039 + ... + 1492358.

It is an arithmetic number, because the mean of its divisors is an integer number (125302716).

Almost surely, 2^1969042020 is an apocalyptic number.

1969042020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1969042020 is an abundant number, since it is smaller than the sum of its proper divisors (4045488348).

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

1969042020 is a wasteful number, since it uses less digits than its factorization.

1969042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983420 (or 2983418 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1969042020 is about 44373.8889438372. Note that the first 3 decimals coincide. The cubic root of 1969042020 is about 1253.3864482231.

The spelling of 1969042020 in words is "one billion, nine hundred sixty-nine million, forty-two thousand, twenty".