1438501974 has 96 divisors (see below), whose sum is σ = 3647960064. Its totient is φ = 370056960.

The previous prime is 1438501973. The next prime is 1438501997. The reversal of 1438501974 is 4791058341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438501973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288547 + ... + 293489.

It is an arithmetic number, because the mean of its divisors is an integer number (37999584).

Almost surely, 2^1438501974 is an apocalyptic number.

1438501974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438501974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823980032).

1438501974 is an abundant number, since it is smaller than the sum of its proper divisors (2209458090).

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

1438501974 is a wasteful number, since it uses less digits than its factorization.

1438501974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1438501974 is about 37927.5885603079. The cubic root of 1438501974 is about 1128.8515164476.

The spelling of 1438501974 in words is "one billion, four hundred thirty-eight million, five hundred one thousand, nine hundred seventy-four".