1514913981 has 8 divisors (see below), whose sum is σ = 2308440384. Its totient is φ = 865665120.

The previous prime is 1514913971. The next prime is 1514913989. The reversal of 1514913981 is 1893194151.

It is a happy number.

1514913981 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1514913981 - 2⁵ = 1514913949 is a prime.

It is a super-2 number, since 2×1514913981² = 4589928739658536722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1514913989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36069360 + ... + 36069401.

It is an arithmetic number, because the mean of its divisors is an integer number (288555048).

Almost surely, 2^1514913981 is an apocalyptic number.

It is an amenable number.

1514913981 is a deficient number, since it is larger than the sum of its proper divisors (793526403).

1514913981 is an equidigital number, since it uses as much as digits as its factorization.

1514913981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72138771.

The product of its digits is 38880, while the sum is 42.

The square root of 1514913981 is about 38921.8959070598. The cubic root of 1514913981 is about 1148.4955705084.

The spelling of 1514913981 in words is "one billion, five hundred fourteen million, nine hundred thirteen thousand, nine hundred eighty-one".