1464890238 has 128 divisors (see below), whose sum is σ = 3957258240. Its totient is φ = 392117760.

The previous prime is 1464890237. The next prime is 1464890243. The reversal of 1464890238 is 8320984641.

It is a happy number.

1464890238 is a `hidden beast` number, since 146 + 489 + 0 + 23 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1464890193 and 1464890202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1464890233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1998120 + ... + 1998852.

It is an arithmetic number, because the mean of its divisors is an integer number (30916080).

Almost surely, 2^1464890238 is an apocalyptic number.

1464890238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1464890238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1978629120).

1464890238 is an abundant number, since it is smaller than the sum of its proper divisors (2492368002).

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

1464890238 is a wasteful number, since it uses less digits than its factorization.

1464890238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1464890238 is about 38273.8845428577. The cubic root of 1464890238 is about 1135.7123845160.

The spelling of 1464890238 in words is "one billion, four hundred sixty-four million, eight hundred ninety thousand, two hundred thirty-eight".