151691633 has 2 divisors, whose sum is σ = 151691634. Its totient is φ = 151691632.

The previous prime is 151691593. The next prime is 151691681. The reversal of 151691633 is 336196151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148035889 + 3655744 = 12167^2 + 1912^2 .

It is a cyclic number.

It is not a de Polignac number, because 151691633 - 2⁸ = 151691377 is a prime.

It is a super-3 number, since 3×151691633³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 151691593 and 151691602.

It is not a weakly prime, because it can be changed into another prime (151699633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75845816 + 75845817.

It is an arithmetic number, because the mean of its divisors is an integer number (75845817).

Almost surely, 2^151691633 is an apocalyptic number.

It is an amenable number.

151691633 is a deficient number, since it is larger than the sum of its proper divisors (1).

151691633 is an equidigital number, since it uses as much as digits as its factorization.

151691633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 151691633 is about 12316.3157234621. The cubic root of 151691633 is about 533.3191876022.

The spelling of 151691633 in words is "one hundred fifty-one million, six hundred ninety-one thousand, six hundred thirty-three".