1494736820 has 24 divisors (see below), whose sum is σ = 3140272800. Its totient is φ = 597642272.

The previous prime is 1494736819. The next prime is 1494736823. The reversal of 1494736820 is 286374941.

It is a super-2 number, since 2×1494736820² = 4468476322127424800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494736823) 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 7 ways as a sum of consecutive naturals, for example, 37091 + ... + 66069.

It is an arithmetic number, because the mean of its divisors is an integer number (130844700).

Almost surely, 2^1494736820 is an apocalyptic number.

1494736820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1494736820 is an abundant number, since it is smaller than the sum of its proper divisors (1645535980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1494736820 is a wasteful number, since it uses less digits than its factorization.

1494736820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31567 (or 31565 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 1494736820 is about 38661.8263924507. The cubic root of 1494736820 is about 1143.3738208871.

The spelling of 1494736820 in words is "one billion, four hundred ninety-four million, seven hundred thirty-six thousand, eight hundred twenty".