151738 has 4 divisors (see below), whose sum is σ = 227610. Its totient is φ = 75868.

The previous prime is 151733. The next prime is 151769. The reversal of 151738 is 837151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 31329 = 347^2 + 177^2 .

It is not an unprimeable number, because it can be changed into a prime (151733) by changing a digit.

151738 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37933 + ... + 37936.

2¹⁵¹⁷³⁸ is an apocalyptic number.

151738 is a deficient number, since it is larger than the sum of its proper divisors (75872).

151738 is an equidigital number, since it uses as much as digits as its factorization.

151738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75871.

The product of its digits is 840, while the sum is 25.

The square root of 151738 is about 389.5356209642. The cubic root of 151738 is about 53.3373521277.

Adding to 151738 its reverse (837151), we get a palindrome (988889).

The spelling of 151738 in words is "one hundred fifty-one thousand, seven hundred thirty-eight".