1945612020 has 48 divisors (see below), whose sum is σ = 5942962368. Its totient is φ = 471663360.

The previous prime is 1945612007. The next prime is 1945612057. The reversal of 1945612020 is 202165491.

It is a super-2 number, since 2×1945612020² = 7570812264736960800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1473289 + ... + 1474608.

It is an arithmetic number, because the mean of its divisors is an integer number (123811716).

Almost surely, 2^1945612020 is an apocalyptic number.

1945612020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945612020 is an abundant number, since it is smaller than the sum of its proper divisors (3997350348).

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

1945612020 is a wasteful number, since it uses less digits than its factorization.

1945612020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947920 (or 2947918 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1945612020 is about 44109.0922599865. The cubic root of 1945612020 is about 1248.3951714353.

The spelling of 1945612020 in words is "one billion, nine hundred forty-five million, six hundred twelve thousand, twenty".