1020945654 has 48 divisors (see below), whose sum is σ = 2307024720. Its totient is φ = 334670400.

The previous prime is 1020945623. The next prime is 1020945683. The reversal of 1020945654 is 4565490201.

1020945654 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 94 + 565 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198394 + ... + 203474.

It is an arithmetic number, because the mean of its divisors is an integer number (48063015).

Almost surely, 2^1020945654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020945654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153512360).

1020945654 is an abundant number, since it is smaller than the sum of its proper divisors (1286079066).

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

1020945654 is an equidigital number, since it uses as much as digits as its factorization.

1020945654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1020945654 is about 31952.2402031532. The cubic root of 1020945654 is about 1006.9336973920.

The spelling of 1020945654 in words is "one billion, twenty million, nine hundred forty-five thousand, six hundred fifty-four".