149198747 has 2 divisors, whose sum is σ = 149198748. Its totient is φ = 149198746.

The previous prime is 149198743. The next prime is 149198801. The reversal of 149198747 is 747891941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149198747 - 2² = 149198743 is a prime.

It is a super-2 number, since 2×149198747² = 44520532212740018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 149198695 and 149198704.

It is not a weakly prime, because it can be changed into another prime (149198743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74599373 + 74599374.

It is an arithmetic number, because the mean of its divisors is an integer number (74599374).

Almost surely, 2^149198747 is an apocalyptic number.

149198747 is a deficient number, since it is larger than the sum of its proper divisors (1).

149198747 is an equidigital number, since it uses as much as digits as its factorization.

149198747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 50.

The square root of 149198747 is about 12214.6938971061. The cubic root of 149198747 is about 530.3815301954.

The spelling of 149198747 in words is "one hundred forty-nine million, one hundred ninety-eight thousand, seven hundred forty-seven".