1495123840 has 128 divisors (see below), whose sum is σ = 4124390400. Its totient is φ = 507660288.

The previous prime is 1495123807. The next prime is 1495123849. The reversal of 1495123840 is 483215941.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1495123840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1495123849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477801 + ... + 480919.

It is an arithmetic number, because the mean of its divisors is an integer number (32221800).

Almost surely, 2^1495123840 is an apocalyptic number.

1495123840 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 1495123840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062195200).

1495123840 is an abundant number, since it is smaller than the sum of its proper divisors (2629266560).

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

1495123840 is a wasteful number, since it uses less digits than its factorization.

1495123840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3240 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1495123840 is about 38666.8312640175. The cubic root of 1495123840 is about 1143.4724938539.

The spelling of 1495123840 in words is "one billion, four hundred ninety-five million, one hundred twenty-three thousand, eight hundred forty".