148781490 has 128 divisors (see below), whose sum is σ = 425779200. Its totient is φ = 32797440.

The previous prime is 148781489. The next prime is 148781491. The reversal of 148781490 is 94187841.

It is an interprime number because it is at equal distance from previous prime (148781489) and next prime (148781491).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (148781491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338691 + ... + 339129.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^148781490 is an apocalyptic number.

148781490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148781490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212889600).

148781490 is an abundant number, since it is smaller than the sum of its proper divisors (276997710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148781490 is a wasteful number, since it uses less digits than its factorization.

148781490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 148781490 is about 12197.6018134714. The cubic root of 148781490 is about 529.8866376745.

The spelling of 148781490 in words is "one hundred forty-eight million, seven hundred eighty-one thousand, four hundred ninety".