153997890 has 16 divisors (see below), whose sum is σ = 369595008. Its totient is φ = 41066096.

The previous prime is 153997889. The next prime is 153997891. The reversal of 153997890 is 98799351.

It is a happy number.

153997890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (153997889) and next prime (153997891).

It is not an unprimeable number, because it can be changed into a prime (153997891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2566602 + ... + 2566661.

It is an arithmetic number, because the mean of its divisors is an integer number (23099688).

Almost surely, 2^153997890 is an apocalyptic number.

153997890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

153997890 is an abundant number, since it is smaller than the sum of its proper divisors (215597118).

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

153997890 is a wasteful number, since it uses less digits than its factorization.

153997890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133273.

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 153997890 is about 12409.5886313769. The cubic root of 153997890 is about 536.0083930705.

The spelling of 153997890 in words is "one hundred fifty-three million, nine hundred ninety-seven thousand, eight hundred ninety".