147978737 has 4 divisors (see below), whose sum is σ = 148525056. Its totient is φ = 147432420.

The previous prime is 147978713. The next prime is 147978739. The reversal of 147978737 is 737879741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 737879741 = 29 ⋅25444129.

It is a cyclic number.

It is not a de Polignac number, because 147978737 - 2⁶ = 147978673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147978739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272753 + ... + 273294.

It is an arithmetic number, because the mean of its divisors is an integer number (37131264).

Almost surely, 2^147978737 is an apocalyptic number.

It is an amenable number.

147978737 is a deficient number, since it is larger than the sum of its proper divisors (546319).

147978737 is an equidigital number, since it uses as much as digits as its factorization.

147978737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546318.

The product of its digits is 2074464, while the sum is 53.

The square root of 147978737 is about 12164.6511252892. The cubic root of 147978737 is about 528.9319144842.

The spelling of 147978737 in words is "one hundred forty-seven million, nine hundred seventy-eight thousand, seven hundred thirty-seven".