1636428542 has 16 divisors (see below), whose sum is σ = 2952954240. Its totient is φ = 664414488.

The previous prime is 1636428463. The next prime is 1636428553. The reversal of 1636428542 is 2458246361.

It is a self number, because there is not a number n which added to its sum of digits gives 1636428542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3075728 + ... + 3076259.

It is an arithmetic number, because the mean of its divisors is an integer number (184559640).

Almost surely, 2^1636428542 is an apocalyptic number.

1636428542 is a deficient number, since it is larger than the sum of its proper divisors (1316525698).

1636428542 is a wasteful number, since it uses less digits than its factorization.

1636428542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152015.

The product of its digits is 276480, while the sum is 41.

The square root of 1636428542 is about 40452.7939949764. The cubic root of 1636428542 is about 1178.4170438598.

The spelling of 1636428542 in words is "one billion, six hundred thirty-six million, four hundred twenty-eight thousand, five hundred forty-two".