1573012987 has 32 divisors (see below), whose sum is σ = 2033482752. Its totient is φ = 1182639744.

The previous prime is 1573012963. The next prime is 1573013063. The reversal of 1573012987 is 7892103751.

It is not a de Polignac number, because 1573012987 - 2¹⁵ = 1572980219 is a prime.

1573012987 is a modest number, since divided by 12987 gives 1573 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1573015987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326208 + ... + 330994.

It is an arithmetic number, because the mean of its divisors is an integer number (63546336).

Almost surely, 2^1573012987 is an apocalyptic number.

1573012987 is a deficient number, since it is larger than the sum of its proper divisors (460469765).

1573012987 is a wasteful number, since it uses less digits than its factorization.

1573012987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1573012987 is about 39661.2277545716. The cubic root of 1573012987 is about 1162.9938979996.

The spelling of 1573012987 in words is "one billion, five hundred seventy-three million, twelve thousand, nine hundred eighty-seven".