153406891 has 4 divisors (see below), whose sum is σ = 167352984. Its totient is φ = 139460800.

The previous prime is 153406873. The next prime is 153406901. The reversal of 153406891 is 198604351.

153406891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198604351 = 11 ⋅18054941.

It is a cyclic number.

It is not a de Polignac number, because 153406891 - 2⁵ = 153406859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153406891.

It is not an unprimeable number, because it can be changed into a prime (153406801) 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, 6973030 + ... + 6973051.

It is an arithmetic number, because the mean of its divisors is an integer number (41838246).

Almost surely, 2^153406891 is an apocalyptic number.

153406891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

153406891 is a deficient number, since it is larger than the sum of its proper divisors (13946093).

153406891 is a wasteful number, since it uses less digits than its factorization.

153406891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13946092.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 153406891 is about 12385.7535499460. The cubic root of 153406891 is about 535.3218327384.

It can be divided in two parts, 153 and 406891, that added together give a square (407044 = 638²).

The spelling of 153406891 in words is "one hundred fifty-three million, four hundred six thousand, eight hundred ninety-one".