1238464650 has 72 divisors (see below), whose sum is σ = 3241694304. Its totient is φ = 312861600.

The previous prime is 1238464613. The next prime is 1238464657. The reversal of 1238464650 is 564648321.

It is a junction number, because it is equal to n+sod(n) for n = 1238464599 and 1238464608.

It is not an unprimeable number, because it can be changed into a prime (1238464657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42715 + ... + 65585.

It is an arithmetic number, because the mean of its divisors is an integer number (45023532).

Almost surely, 2^1238464650 is an apocalyptic number.

1238464650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1238464650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620847152).

1238464650 is an abundant number, since it is smaller than the sum of its proper divisors (2003229654).

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

1238464650 is a wasteful number, since it uses less digits than its factorization.

1238464650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22924 (or 22900 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1238464650 is about 35191.8264658145. The cubic root of 1238464650 is about 1073.8934783332.

The spelling of 1238464650 in words is "one billion, two hundred thirty-eight million, four hundred sixty-four thousand, six hundred fifty".