1602390440 has 64 divisors (see below), whose sum is σ = 4190313600. Its totient is φ = 540073728.

The previous prime is 1602390373. The next prime is 1602390463. The reversal of 1602390440 is 440932061.

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, 31979 + ... + 65018.

It is an arithmetic number, because the mean of its divisors is an integer number (65473650).

Almost surely, 2^1602390440 is an apocalyptic number.

1602390440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1602390440 is an abundant number, since it is smaller than the sum of its proper divisors (2587923160).

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

1602390440 is a wasteful number, since it uses less digits than its factorization.

1602390440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97074 (or 97070 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1602390440 is about 40029.8693477758. The cubic root of 1602390440 is about 1170.1892795289.

The spelling of 1602390440 in words is "one billion, six hundred two million, three hundred ninety thousand, four hundred forty".