145906149 has 16 divisors (see below), whose sum is σ = 205542080. Its totient is φ = 91808640.

The previous prime is 145906147. The next prime is 145906153. The reversal of 145906149 is 941609541.

145906149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145906149 - 2¹ = 145906147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145906141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11169 + ... + 20409.

It is an arithmetic number, because the mean of its divisors is an integer number (12846380).

Almost surely, 2^145906149 is an apocalyptic number.

145906149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145906149 is a deficient number, since it is larger than the sum of its proper divisors (59635931).

145906149 is a wasteful number, since it uses less digits than its factorization.

145906149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9540.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 145906149 is about 12079.1617672751. The cubic root of 145906149 is about 526.4508909299.

The spelling of 145906149 in words is "one hundred forty-five million, nine hundred six thousand, one hundred forty-nine".