1002650385 has 64 divisors (see below), whose sum is σ = 1833394176. Its totient is φ = 463161600.

The previous prime is 1002650371. The next prime is 1002650399. The reversal of 1002650385 is 5830562001.

It is an interprime number because it is at equal distance from previous prime (1002650371) and next prime (1002650399).

It is not a de Polignac number, because 1002650385 - 2¹⁵ = 1002617617 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1635339 + ... + 1635951.

It is an arithmetic number, because the mean of its divisors is an integer number (28646784).

Almost surely, 2^1002650385 is an apocalyptic number.

1002650385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1002650385 is a deficient number, since it is larger than the sum of its proper divisors (830743791).

1002650385 is a wasteful number, since it uses less digits than its factorization.

1002650385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1002650385 is about 31664.6551378663. The cubic root of 1002650385 is about 1000.8826823094.

The spelling of 1002650385 in words is "one billion, two million, six hundred fifty thousand, three hundred eighty-five".