1249620481 has 8 divisors (see below), whose sum is σ = 1315714400. Its totient is φ = 1183559040.

The previous prime is 1249620467. The next prime is 1249620503. The reversal of 1249620481 is 1840269421.

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

It is a cyclic number.

It is not a de Polignac number, because 1249620481 - 2¹³ = 1249612289 is a prime.

It is a super-2 number, since 2×1249620481² = 3123102693069342722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1249620481.

It is not an unprimeable number, because it can be changed into a prime (1249620451) 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, 149041 + ... + 157201.

It is an arithmetic number, because the mean of its divisors is an integer number (164464300).

Almost surely, 2^1249620481 is an apocalyptic number.

It is an amenable number.

1249620481 is a deficient number, since it is larger than the sum of its proper divisors (66093919).

1249620481 is an equidigital number, since it uses as much as digits as its factorization.

1249620481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16239.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1249620481 is about 35349.9714427042. The cubic root of 1249620481 is about 1077.1083141275.

The spelling of 1249620481 in words is "one billion, two hundred forty-nine million, six hundred twenty thousand, four hundred eighty-one".