1655738898 has 32 divisors (see below), whose sum is σ = 3624892992. Its totient is φ = 500020800.

The previous prime is 1655738897. The next prime is 1655738899. The reversal of 1655738898 is 8988375561.

It is an interprime number because it is at equal distance from previous prime (1655738897) and next prime (1655738899).

It is not an unprimeable number, because it can be changed into a prime (1655738893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23473 + ... + 62148.

It is an arithmetic number, because the mean of its divisors is an integer number (113277906).

Almost surely, 2^1655738898 is an apocalyptic number.

1655738898 is an abundant number, since it is smaller than the sum of its proper divisors (1969154094).

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

1655738898 is a wasteful number, since it uses less digits than its factorization.

1655738898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85930.

The product of its digits is 14515200, while the sum is 60.

The square root of 1655738898 is about 40690.7716564825. The cubic root of 1655738898 is about 1183.0341569576.

It can be divided in two parts, 165573 and 8898, that added together give a palindrome (174471).

The spelling of 1655738898 in words is "one billion, six hundred fifty-five million, seven hundred thirty-eight thousand, eight hundred ninety-eight".