1002642654 has 64 divisors (see below), whose sum is σ = 2280015360. Its totient is φ = 291392640.

The previous prime is 1002642649. The next prime is 1002642679. The reversal of 1002642654 is 4562462001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623119 + ... + 624725.

It is an arithmetic number, because the mean of its divisors is an integer number (35625240).

Almost surely, 2^1002642654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002642654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140007680).

1002642654 is an abundant number, since it is smaller than the sum of its proper divisors (1277372706).

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

1002642654 is a wasteful number, since it uses less digits than its factorization.

1002642654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1002642654 is about 31664.5330614554. The cubic root of 1002642654 is about 1000.8801098461.

The spelling of 1002642654 in words is "one billion, two million, six hundred forty-two thousand, six hundred fifty-four".