1474249821 has 16 divisors (see below), whose sum is σ = 2145082368. Its totient is φ = 893185200.

The previous prime is 1474249813. The next prime is 1474249849. The reversal of 1474249821 is 1289424741.

It is not a de Polignac number, because 1474249821 - 2³ = 1474249813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1474249871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130230 + ... + 141096.

It is an arithmetic number, because the mean of its divisors is an integer number (134067648).

Almost surely, 2^1474249821 is an apocalyptic number.

1474249821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1474249821 is a deficient number, since it is larger than the sum of its proper divisors (670832547).

1474249821 is a wasteful number, since it uses less digits than its factorization.

1474249821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14992.

The product of its digits is 129024, while the sum is 42.

The square root of 1474249821 is about 38395.9609985217. The cubic root of 1474249821 is about 1138.1260432747.

The spelling of 1474249821 in words is "one billion, four hundred seventy-four million, two hundred forty-nine thousand, eight hundred twenty-one".