1522143381 has 16 divisors (see below), whose sum is σ = 2310289920. Its totient is φ = 882401520.

The previous prime is 1522143379. The next prime is 1522143397. The reversal of 1522143381 is 1833412251.

It is not a de Polignac number, because 1522143381 - 2¹ = 1522143379 is a prime.

It is a super-2 number, since 2×1522143381² = 4633840944644222322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1522143341) 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, 1001971 + ... + 1003488.

It is an arithmetic number, because the mean of its divisors is an integer number (144393120).

Almost surely, 2^1522143381 is an apocalyptic number.

1522143381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1522143381 is a deficient number, since it is larger than the sum of its proper divisors (788146539).

1522143381 is a wasteful number, since it uses less digits than its factorization.

1522143381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005496.

The product of its digits is 5760, while the sum is 30.

The square root of 1522143381 is about 39014.6559769531. The cubic root of 1522143381 is about 1150.3196039222.

The spelling of 1522143381 in words is "one billion, five hundred twenty-two million, one hundred forty-three thousand, three hundred eighty-one".