1642642554 has 32 divisors (see below), whose sum is σ = 3765104640. Its totient is φ = 468014832.

The previous prime is 1642642531. The next prime is 1642642559. The reversal of 1642642554 is 4552462461.

It is not an unprimeable number, because it can be changed into a prime (1642642559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39394 + ... + 69549.

It is an arithmetic number, because the mean of its divisors is an integer number (117659520).

Almost surely, 2^1642642554 is an apocalyptic number.

1642642554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1642642554 is an abundant number, since it is smaller than the sum of its proper divisors (2122462086).

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

1642642554 is a wasteful number, since it uses less digits than its factorization.

1642642554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109314.

The product of its digits is 230400, while the sum is 39.

The square root of 1642642554 is about 40529.5269402444. The cubic root of 1642642554 is about 1179.9067612817.

The spelling of 1642642554 in words is "one billion, six hundred forty-two million, six hundred forty-two thousand, five hundred fifty-four".