1254221893 has 16 divisors (see below), whose sum is σ = 1321094016. Its totient is φ = 1189218240.

The previous prime is 1254221873. The next prime is 1254221897. The reversal of 1254221893 is 3981224521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254221893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a deceptive number, since it divides R_1254221892.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254221897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181583 + ... + 1182643.

It is an arithmetic number, because the mean of its divisors is an integer number (82568376).

Almost surely, 2^1254221893 is an apocalyptic number.

It is an amenable number.

1254221893 is a deficient number, since it is larger than the sum of its proper divisors (66872123).

1254221893 is a wasteful number, since it uses less digits than its factorization.

1254221893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its digits is 34560, while the sum is 37.

The square root of 1254221893 is about 35414.9953127203. The cubic root of 1254221893 is about 1078.4287545517.

The spelling of 1254221893 in words is "one billion, two hundred fifty-four million, two hundred twenty-one thousand, eight hundred ninety-three".