1603398240 has 120 divisors (see below), whose sum is σ = 5658705360. Its totient is φ = 427569408.

The previous prime is 1603398227. The next prime is 1603398253. The reversal of 1603398240 is 428933061.

1603398240 is a `hidden beast` number, since 1 + 603 + 3 + 9 + 8 + 2 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1603398227) and next prime (1603398253).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1603398195 and 1603398204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48900 + ... + 74819.

It is an arithmetic number, because the mean of its divisors is an integer number (47155878).

Almost surely, 2^1603398240 is an apocalyptic number.

1603398240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1603398240 is an abundant number, since it is smaller than the sum of its proper divisors (4055307120).

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

1603398240 is a wasteful number, since it uses less digits than its factorization.

1603398240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123746 (or 123729 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1603398240 is about 40042.4554691642. The cubic root of 1603398240 is about 1170.4345525857.

The spelling of 1603398240 in words is "one billion, six hundred three million, three hundred ninety-eight thousand, two hundred forty".