149225978739 has 8 divisors (see below), whose sum is σ = 209439970240. Its totient is φ = 94247986536.

The previous prime is 149225978731. The next prime is 149225978753. The reversal of 149225978739 is 937879522941.

It is a happy number.

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

It is not a de Polignac number, because 149225978739 - 2³ = 149225978731 is a prime.

It is a super-2 number, since 2×149225978739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149225978739.

It is not an unprimeable number, because it can be changed into a prime (149225978731) 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, 1308999757 + ... + 1308999870.

It is an arithmetic number, because the mean of its divisors is an integer number (26179996280).

Almost surely, 2^149225978739 is an apocalyptic number.

149225978739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

149225978739 is a deficient number, since it is larger than the sum of its proper divisors (60213991501).

149225978739 is a wasteful number, since it uses less digits than its factorization.

149225978739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617999649.

The product of its digits is 68584320, while the sum is 66.

The spelling of 149225978739 in words is "one hundred forty-nine billion, two hundred twenty-five million, nine hundred seventy-eight thousand, seven hundred thirty-nine".