1493673840 has 60 divisors (see below), whose sum is σ = 5016257064. Its totient is φ = 398312832.

The previous prime is 1493673833. The next prime is 1493673871. The reversal of 1493673840 is 483763941.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1036554 + ... + 1037993.

Almost surely, 2^1493673840 is an apocalyptic number.

1493673840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1493673840 is an abundant number, since it is smaller than the sum of its proper divisors (3522583224).

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

1493673840 is a wasteful number, since it uses less digits than its factorization.

1493673840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074566 (or 2074557 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1493673840 is about 38648.0767956182. The cubic root of 1493673840 is about 1143.1027203812.

The spelling of 1493673840 in words is "one billion, four hundred ninety-three million, six hundred seventy-three thousand, eight hundred forty".