1305280490238 has 24 divisors (see below), whose sum is σ = 2897085967776. Its totient is φ = 424481460000.

The previous prime is 1305280490237. The next prime is 1305280490251. The reversal of 1305280490238 is 8320940825031.

1305280490238 is a `hidden beast` number, since 1 + 3 + 0 + 52 + 80 + 490 + 2 + 38 = 666.

It is a super-2 number, since 2×1305280490238² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1305280490193 and 1305280490202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305280490237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884335638 + ... + 884337113.

It is an arithmetic number, because the mean of its divisors is an integer number (120711915324).

Almost surely, 2^{1305280490238} is an apocalyptic number.

1305280490238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1305280490238 is an abundant number, since it is smaller than the sum of its proper divisors (1591805477538).

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

1305280490238 is a wasteful number, since it uses less digits than its factorization.

1305280490238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768672800 (or 1768672797 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1305280490238 in words is "one trillion, three hundred five billion, two hundred eighty million, four hundred ninety thousand, two hundred thirty-eight".