1498618940 has 144 divisors (see below), whose sum is σ = 3995107200. Its totient is φ = 467970048.

The previous prime is 1498618931. The next prime is 1498618963. The reversal of 1498618940 is 498168941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1005716 + ... + 1007204.

It is an arithmetic number, because the mean of its divisors is an integer number (27743800).

Almost surely, 2^1498618940 is an apocalyptic number.

1498618940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1498618940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997553600).

1498618940 is an abundant number, since it is smaller than the sum of its proper divisors (2496488260).

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

1498618940 is a wasteful number, since it uses less digits than its factorization.

1498618940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1498618940 is about 38711.9999483364. Note that the first 4 decimals coincide. The cubic root of 1498618940 is about 1144.3628193338.

The spelling of 1498618940 in words is "one billion, four hundred ninety-eight million, six hundred eighteen thousand, nine hundred forty".