1287393153 has 32 divisors (see below), whose sum is σ = 1869702912. Its totient is φ = 784742400.

The previous prime is 1287393137. The next prime is 1287393271. The reversal of 1287393153 is 3513937821.

It is not a de Polignac number, because 1287393153 - 2⁴ = 1287393137 is a prime.

It is a super-2 number, since 2×1287393153² = 3314762260782562818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1287393103) 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, 548763 + ... + 551103.

It is an arithmetic number, because the mean of its divisors is an integer number (58428216).

Almost surely, 2^1287393153 is an apocalyptic number.

It is an amenable number.

1287393153 is a deficient number, since it is larger than the sum of its proper divisors (582309759).

1287393153 is a wasteful number, since it uses less digits than its factorization.

1287393153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665.

The product of its digits is 136080, while the sum is 42.

The square root of 1287393153 is about 35880.2613284798. The cubic root of 1287393153 is about 1087.8534623799.

The spelling of 1287393153 in words is "one billion, two hundred eighty-seven million, three hundred ninety-three thousand, one hundred fifty-three".