1513881 has 12 divisors (see below), whose sum is σ = 2224560. Its totient is φ = 991800.

The previous prime is 1513871. The next prime is 1513891. The reversal of 1513881 is 1883151.

It is an interprime number because it is at equal distance from previous prime (1513871) and next prime (1513891).

It is not a de Polignac number, because 1513881 - 2¹⁰ = 1512857 is a prime.

It is a super-2 number, since 2×1513881² = 4583671364322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1513871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 895 + ... + 1956.

It is an arithmetic number, because the mean of its divisors is an integer number (185380).

2^1513881 is an apocalyptic number.

It is an amenable number.

1513881 is a deficient number, since it is larger than the sum of its proper divisors (710679).

1513881 is a wasteful number, since it uses less digits than its factorization.

1513881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2913 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1513881 is about 1230.3987158641. The cubic root of 1513881 is about 114.8234467926.

The spelling of 1513881 in words is "one million, five hundred thirteen thousand, eight hundred eighty-one".