1481994293 has 18 divisors (see below), whose sum is σ = 1619601606. Its totient is φ = 1355445312.

The previous prime is 1481994287. The next prime is 1481994341. The reversal of 1481994293 is 3924991841.

It can be written as a sum of positive squares in 9 ways, for example, as 1129969 + 1480864324 = 1063^2 + 38482^2 .

It is not a de Polignac number, because 1481994293 - 2⁶ = 1481994229 is a prime.

It is a super-3 number, since 3×1481994293³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481994203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5057855 + ... + 5058147.

It is an arithmetic number, because the mean of its divisors is an integer number (89977867).

Almost surely, 2^1481994293 is an apocalyptic number.

1481994293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1481994293 is a deficient number, since it is larger than the sum of its proper divisors (137607313).

1481994293 is an equidigital number, since it uses as much as digits as its factorization.

1481994293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 479 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 1481994293 is about 38496.6789866347. The cubic root of 1481994293 is about 1140.1154835816.

The spelling of 1481994293 in words is "one billion, four hundred eighty-one million, nine hundred ninety-four thousand, two hundred ninety-three".