145397837 has 8 divisors (see below), whose sum is σ = 159914496. Its totient is φ = 131357232.

The previous prime is 145397807. The next prime is 145397867. The reversal of 145397837 is 738793541.

It is an interprime number because it is at equal distance from previous prime (145397807) and next prime (145397867).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145397837 - 2²² = 141203533 is a prime.

It is a super-2 number, since 2×145397837² = 42281062008557138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145397791 and 145397800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145397807) 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, 118373 + ... + 119594.

It is an arithmetic number, because the mean of its divisors is an integer number (19989312).

Almost surely, 2^145397837 is an apocalyptic number.

It is an amenable number.

145397837 is a deficient number, since it is larger than the sum of its proper divisors (14516659).

145397837 is a wasteful number, since it uses less digits than its factorization.

145397837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238027.

The product of its digits is 635040, while the sum is 47.

The square root of 145397837 is about 12058.1025455915. The cubic root of 145397837 is about 525.8388247285.

The spelling of 145397837 in words is "one hundred forty-five million, three hundred ninety-seven thousand, eight hundred thirty-seven".