1023739650 has 36 divisors (see below), whose sum is σ = 2750448402. Its totient is φ = 272997120.

The previous prime is 1023739579. The next prime is 1023739669. The reversal of 1023739650 is 569373201.

It can be written as a sum of positive squares in 3 ways, for example, as 499924881 + 523814769 = 22359^2 + 22887^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1137039 + ... + 1137938.

Almost surely, 2^1023739650 is an apocalyptic number.

1023739650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023739650 is an abundant number, since it is smaller than the sum of its proper divisors (1726708752).

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

1023739650 is a wasteful number, since it uses less digits than its factorization.

1023739650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274995 (or 2274987 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 1023739650 is about 31995.9317726488. The cubic root of 1023739650 is about 1007.8514106844.

The spelling of 1023739650 in words is "one billion, twenty-three million, seven hundred thirty-nine thousand, six hundred fifty".