1573913946 has 64 divisors (see below), whose sum is σ = 3482818560. Its totient is φ = 470211840.

The previous prime is 1573913909. The next prime is 1573913959. The reversal of 1573913946 is 6493193751.

It is a junction number, because it is equal to n+sod(n) for n = 1573913895 and 1573913904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1782021 + ... + 1782903.

It is an arithmetic number, because the mean of its divisors is an integer number (54419040).

Almost surely, 2^1573913946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1573913946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741409280).

1573913946 is an abundant number, since it is smaller than the sum of its proper divisors (1908904614).

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

1573913946 is a wasteful number, since it uses less digits than its factorization.

1573913946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its digits is 612360, while the sum is 48.

The square root of 1573913946 is about 39672.5843120914. The cubic root of 1573913946 is about 1163.2158944365.

It can be divided in two parts, 1573 and 913946, that added together give a palindrome (915519).

The spelling of 1573913946 in words is "one billion, five hundred seventy-three million, nine hundred thirteen thousand, nine hundred forty-six".