145738515 has 16 divisors (see below), whose sum is σ = 251119008. Its totient is φ = 71748096.

The previous prime is 145738457. The next prime is 145738517. The reversal of 145738515 is 515837541.

It is not a de Polignac number, because 145738515 - 2⁶ = 145738451 is a prime.

It is a super-3 number, since 3×145738515³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (145738517) 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, 373494 + ... + 373883.

It is an arithmetic number, because the mean of its divisors is an integer number (15694938).

Almost surely, 2^145738515 is an apocalyptic number.

145738515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145738515 is a deficient number, since it is larger than the sum of its proper divisors (105380493).

145738515 is a wasteful number, since it uses less digits than its factorization.

145738515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747398.

The product of its digits is 84000, while the sum is 39.

The square root of 145738515 is about 12072.2207981796. The cubic root of 145738515 is about 526.2491976073.

The spelling of 145738515 in words is "one hundred forty-five million, seven hundred thirty-eight thousand, five hundred fifteen".