1473391640 has 64 divisors (see below), whose sum is σ = 3845318400. Its totient is φ = 497616768.

The previous prime is 1473391639. The next prime is 1473391657. The reversal of 1473391640 is 461933741.

It is a junction number, because it is equal to n+sod(n) for n = 1473391594 and 1473391603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20510 + ... + 58029.

It is an arithmetic number, because the mean of its divisors is an integer number (60083100).

Almost surely, 2^1473391640 is an apocalyptic number.

1473391640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1473391640 is an abundant number, since it is smaller than the sum of its proper divisors (2371926760).

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

1473391640 is a wasteful number, since it uses less digits than its factorization.

1473391640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78624 (or 78620 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 1473391640 is about 38384.7839644826. The cubic root of 1473391640 is about 1137.9051608269.

The spelling of 1473391640 in words is "one billion, four hundred seventy-three million, three hundred ninety-one thousand, six hundred forty".