1020253151394 has 24 divisors (see below), whose sum is σ = 2210595809292. Its totient is φ = 340077104640.

The previous prime is 1020253151381. The next prime is 1020253151419. The reversal of 1020253151394 is 4931513520201.

It is a happy number.

1020253151394 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 2 + 53 + 1 + 513 + 94 = 666.

1020253151394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 875697309369 + 144555842025 = 935787^2 + 380205^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293854 + ... + 1458374.

Almost surely, 2^{1020253151394} is an apocalyptic number.

1020253151394 is an abundant number, since it is smaller than the sum of its proper divisors (1190342657898).

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

1020253151394 is a wasteful number, since it uses less digits than its factorization.

1020253151394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213202 (or 1213199 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 1020253151394 its reverse (4931513520201), we get a palindrome (5951766671595).

The spelling of 1020253151394 in words is "one trillion, twenty billion, two hundred fifty-three million, one hundred fifty-one thousand, three hundred ninety-four".