1968898153 has 4 divisors (see below), whose sum is σ = 1969049088. Its totient is φ = 1968747220.

The previous prime is 1968898121. The next prime is 1968898157. The reversal of 1968898153 is 3518988691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1968898153 - 2⁵ = 1968898121 is a prime.

It is a super-2 number, since 2×1968898153² = 7753119873773622818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968898157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53833 + ... + 82678.

It is an arithmetic number, because the mean of its divisors is an integer number (492262272).

Almost surely, 2^1968898153 is an apocalyptic number.

It is an amenable number.

1968898153 is a deficient number, since it is larger than the sum of its proper divisors (150935).

1968898153 is a wasteful number, since it uses less digits than its factorization.

1968898153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150934.

The product of its digits is 3732480, while the sum is 58.

The square root of 1968898153 is about 44372.2678370173. The cubic root of 1968898153 is about 1253.3559214765.

The spelling of 1968898153 in words is "one billion, nine hundred sixty-eight million, eight hundred ninety-eight thousand, one hundred fifty-three".