145981263 has 16 divisors (see below), whose sum is σ = 201614336. Its totient is φ = 93856320.

The previous prime is 145981229. The next prime is 145981327. The reversal of 145981263 is 362189541.

It is not a de Polignac number, because 145981263 - 2¹⁰ = 145980239 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 (145981463) 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, 25995 + ... + 31107.

It is an arithmetic number, because the mean of its divisors is an integer number (12600896).

Almost surely, 2^145981263 is an apocalyptic number.

145981263 is a deficient number, since it is larger than the sum of its proper divisors (55633073).

145981263 is a wasteful number, since it uses less digits than its factorization.

145981263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454.

The product of its digits is 51840, while the sum is 39.

The square root of 145981263 is about 12082.2706061402. The cubic root of 145981263 is about 526.5412162260.

The spelling of 145981263 in words is "one hundred forty-five million, nine hundred eighty-one thousand, two hundred sixty-three".